A whole lot, but each person has to try their best to survive. I think self-harm is usually part of the survival instinct, combined with a longing to escape.
It can be very responsible for it, but usually people who exhibit suicidal gestures have some deeper psychological issues going on. Psychological issues build up over time though if not resolved. So bullying can be something that develops these problems, or it can be what exacerbates a pre-existing condition.
me too lol
it contributes , no doubt
More than half.
It the case most of the time.