Finding out that a friend is hurting themselves is frightening, and the fact that you’re looking for guidance means you already care enough to help. Self-harm is more common than most people realize, with studies across multiple countries finding that between 17% and 45% of adolescents report engaging in it at some point. Your friend is not “crazy” or beyond help. They’re using physical pain to cope with emotional pain they don’t know how to manage any other way.
What you do next matters. The right response can open a door to recovery. The wrong one, even with good intentions, can push your friend further away. Here’s what you need to know.
Why People Self-Harm
Self-harm is not a suicide attempt, and it’s not attention-seeking. For most people, it functions as a release valve for emotional pressure they can’t express or tolerate. The biology behind it helps explain why: people who self-harm tend to have lower baseline levels of the body’s natural pain-relieving chemicals. When they injure themselves, those chemicals flood in, temporarily reducing emotional distress and sometimes producing a brief sense of calm or relief. Over time, this creates a cycle that can feel impossible to break without outside help.
Common triggers include overwhelming sadness, anxiety, anger, numbness, or feeling out of control. Your friend may be dealing with something you can see, like a family conflict or a breakup, or something invisible, like depression or trauma they haven’t disclosed. The self-harm itself is the symptom, not the root problem.
Signs You Might Notice
Sometimes a friend will tell you directly. More often, you’ll pick up on patterns before any conversation happens. Physical signs include unexplained cuts, scratches, bruises, bite marks, or burns, often in patterns and most commonly on the arms, legs, chest, or stomach. Wearing long sleeves or pants even in warm weather is one of the most recognized indicators. You might also notice your friend keeping sharp objects nearby or frequently explaining away injuries as accidents.
Behavioral changes matter just as much. Watch for emotions that shift rapidly and unpredictably, withdrawal from friendships, talk of feeling hopeless or worthless, or a general sense that your friend’s inner world has become chaotic. None of these signs alone confirms self-harm, but a cluster of them is worth paying attention to.
How to Start the Conversation
This is the part most people dread, and it’s also the most important thing you can do. Choose a private, quiet space where your friend won’t feel cornered or embarrassed. Don’t ambush them in a group setting or bring it up casually in passing. Let them know you’ve noticed something and that you’re worried, then give them room to respond at their own pace.
Keep your tone calm and nonjudgmental. You don’t need a perfect script. Simple, honest statements work best:
- “I’ve noticed you seem to be going through something difficult, and I care about you.”
- “You don’t have to talk about it right now, but I’m here whenever you’re ready.”
- “What would be the most helpful thing I could do for you?”
Let them be in control of the conversation. Acknowledge their pain without pushing for details. If they cry, let them cry. If they go quiet, sit with the silence. The goal of this first conversation isn’t to fix anything. It’s to let your friend know they’re not alone and that you won’t turn away from them.
What Not to Do
Your instincts may tell you to react with shock, to demand they stop immediately, or to inspect their injuries. Resist all of these. Forcing someone to stop self-harming without addressing the underlying distress often makes things worse, because you’ve taken away their coping mechanism without replacing it with anything. They may simply hide the behavior more carefully.
Don’t minimize what they’re going through (“It’s not that bad”) or frame it as manipulation (“You’re just doing this for attention”). Self-harm is a sign of serious emotional distress, and stigma from the people closest to them can shut down any willingness to seek help. Don’t threaten to tell everyone, don’t issue ultimatums, and don’t make the conversation about your own feelings of fear or betrayal. You can share that you’re worried, but keep the focus on them.
Self-Harm and Suicide Are Not the Same
Most people who self-harm are not trying to end their lives. They’re trying to manage pain, not escape existence. That said, self-harm does increase the risk of suicidal thoughts over time, especially if the underlying emotional distress goes untreated. The distinction matters because it changes how urgent the situation is.
If your friend talks about wanting to die, expresses hopelessness about the future, mentions having a plan, or says goodbye in a way that feels final, treat it as a crisis. In the United States, the 988 Suicide and Crisis Lifeline is available 24/7 by calling or texting 988. The Crisis Text Line is available by texting HOME to 741741. In the UK, you can call the Samaritans at 116 123. These services are free, confidential, and staffed by trained counselors who can help you figure out the next step in real time.
Encouraging Professional Help
You are not your friend’s therapist, and you shouldn’t try to be. The most effective thing you can do, beyond listening, is gently encourage them to talk to a professional. You don’t need to push hard. Frame it as a positive step, not an admission of failure: “Talking to someone who really understands this stuff could help you feel better faster.”
Several types of therapy have strong track records for self-harm. Cognitive behavioral therapy helps people identify the thought patterns driving their distress and build healthier responses. Dialectical behavior therapy, originally developed for people with intense emotional swings, teaches specific skills for tolerating distress and managing emotions without turning to self-injury. Mindfulness-based approaches help people sit with difficult feelings instead of reacting to them. A therapist will work with your friend to figure out which approach fits best, and family or group therapy may also play a role.
If your friend resists the idea of therapy, don’t force it. Suggest smaller steps: talking to a school counselor, calling a helpline, or even reading about other people’s recovery experiences. Plant the seed and keep the door open.
Distraction Techniques You Can Share
Between conversations and before professional help is in place, your friend may benefit from simple distraction strategies for moments when the urge to self-harm hits. These work by creating a delay. Most urges peak and then pass within 15 to 30 minutes, so anything that fills that window can help.
Some people hold ice cubes in their hands for a sharp physical sensation that doesn’t cause injury. Others snap a rubber band on their wrist, do intense exercise, write down what they’re feeling, draw on their skin with a red marker, or call someone they trust. These aren’t permanent solutions, but they can interrupt the cycle while your friend works toward longer-term help.
Taking Care of Yourself
Supporting a friend through self-harm is emotionally heavy, and you can’t pour from an empty cup. It’s normal to feel scared, helpless, angry, or exhausted. It’s also normal to feel guilty when you need a break. None of that makes you a bad friend.
Set boundaries around what you can realistically offer. You can listen, you can check in, you can sit with them during hard moments, but you cannot be their only source of support, and you are not responsible for their choices. If you find yourself losing sleep, withdrawing from your own life, or constantly anxious about what your friend might do, talk to someone yourself. A school counselor, a parent you trust, or your own therapist can help you process what you’re carrying. Joining a support group for people who care for someone with mental health challenges is another option that reduces isolation.
Your health and wellbeing matter just as much as your friend’s. Staying well yourself is not selfish. It’s what allows you to keep showing up for the people you love.