Can I wish for a heart attack?
Is this serious? Why would you want a heart attack?
I'm tired of living with depression day in and day out.
I understand that it's difficult living with depression, but hoping to have a heart attack isn't the way to deal with it. You should try to get help for your depression instead of wishing for something bad to happen to you.
I can deal with my depression on my own.
If you want a heart attack just to die, then you clearly cannot live with depression on your own. You should serious consider seeing someone to help you with this issue.