RE: Where to begin when you can't find the bottom
Hmm sounds like you are going thru a tough time right now, why don't you write out the things you want to change and choose the most important one first.
Once you pick what you want to work on you can create small goals to make that one thing happen. I bet once you accomplish one goal it will get you on task for accomplishing more. You will become more confident and you will be able to move forward in your life.
Maybe everything needed to change? Maybe you should consider this a fresh start.