You counter depression with water ( lots and lots of water ) and exercise.
When you want a drink. Leave your wallet at home grab a bottle of poweraid and go for a run.
Each time you think your down in the dumps. Drop and do 5 push up's and 20 sit ups.
Do this over and over.
And get into a routine again.
Go to bed and get up the same time every day. No matter how you feel.
You are suffering from depression.
You have anywhere else to stay ? Family. Good friends who have children ? Friends who exercise and have healthy habits ?
Get yourself into shape mentally.
This is good advice ^^^^, tpc, and I would add to it "post early and often here." Come here to vent, get advice, or just get a good cry out -- we are here to help and support you in whatever way we can.