I have tons of advice, but since everyone's situation, strengths, and weaknesses are different, it might not make much difference.
Here goes:
#1 - Figure out how to make money. If that means having a job, then learn how to find jobs and keep them. Don't leave a good paying job until you have another one lined up. If you hate your boss, or the company does stupid things, then focus your anger / revenge in a job search. They should never know about it. Your best payback is by leaving them and taking your worthwhile contributions with you. Corollary - when leaving, don't give into the urge to finally have your say. Resignation letter should be one sentence. Exit interview should be positive and talk about your need for career advancement or seeking other opportunities.
#2 - Your diagnosis (official or self-diagnosed) is a tool for YOU to learn how you can best meet the challenges of life, so that you figure out which strategies will work and which are less likely to work for you. Only disclose if you must, to get treatment or benefits. If you are able to compete in the workplace without mentioning it, then do so. A zebra who can't run fast should not wear a sign saying "slow zebra," because lions can read.
#3 - Stay active. This includes getting regular exercise and staying in decent shape. You don't have to join a gym or buy expensive equipment. You can do pretty much everything you need to do with some decent shoes, some inexpensive dumbbell weights, the floor, and your body weight. Three benefits beyond just health: people in the workplace respect you more, your chances for romantic connections increase significantly, and exercise is an exceptional treatment for depression.
#4 - Keep busy, even with menial tasks, even if you don't feel like doing them. It helps to keep you from spending too much time in your head, and you needed to get that stuff done anyway.
I'm sure there are some others, but that's all I have right now.