How do you start life over?

Little by little. Fix things one at a time. Get rid of the bum 1st, just do the next best right thing in front of you, and everything else will just fall into their proper places. Make simple small improvements in your life on a daily basis. This is how I did it! And it didn't take as long as I thought it would. Less then a year, actually. I should have done it a long time ago, but am grateful I finally DID do it, and I couldn't be happier now.....