I think my friends know nothing of what I've done to myself
What have you done to yourself?
I used to have a lot of issues with myself
It is good to tell your friends when you are going through tough times. They may be able to help you and offer support if they know what is going on.
I feel safer by playing with my problems by myself than sharing and struggling with friends. Nothing is at it seems.
I understand the fear of talking to others about your problems, but that's what friends are for. If you don't want to talk to them, perhaps it'd be best to talk to a medical professional about your mental issues.