I do it mostly when i'm angry or frustrated and need something akin to comfort - i especially like the 'warming' sensation afterwards. I sleep well after self harming. But be advised, self harming IS addictive, expensive and of course, further damaging. For me it is becoming less and less effective and all i have to show for it is a badly mutilated body and an even worse mental state. I would encourage mindfulness of the other options out there but of course i would never tell you 'not' to cut - i'm not in a position too. All i can hope is that you make better choices. All the best.