Remember that even after you do leave, it will take time to start feeling good again, and be patient with yourself. Time takes time. If you are expecting to detach and immediately stop obsessing and worrying and being depressed, then that is exactly like an addict, expecting immediate gratification. It is what keeps people addicted. You will have to do the work of recovery to recieve the benefits. The sooner you start to detach and do the work of recovery, the sooner you will start to feel a little glimmer of hope stirring within you. You can return to normal, but it will take time and distance from your current situation.
Love,
KJ