I'm sorry you're going through this. I was in your shoes about six months ago. It's still so hard. Go to alanon. Try therapy if you need it. Exercise. Shop. Dedicate yourself to school. Do anything you need to gain yourself back and maintain your happiness. One thing that I continuously do is I take a mental inventory of my wants, needs, and values. When I miss him or get sad I go over my list and realize he no longer fits that list. It helps. Also read stories on here. You're stronger than you think.