Sorry you're having such a rough time right now
(I'm focusing on a small area, I know) I don't know/remember how far removed you are from school, but those skills aren't taught, at least not in any class I ever saw. A lot of those skills are things you learn as you go. Do you have any friends or family who seem to have a particular area under control? For example, I know I have friends who are going through grad school, so if I'm overwhelmed by school I might look to them for ideas of how to deal with it. For something like taxes or buying my car (a few years back now), I asked my dad for help. By having them help you (NOT having them do it for you), you'll pick up some tricks they use to get it done easier/better/faster. Then, if you have to do that (or something similar) again, you have a better starting point for going it alone, or for learning something new the next time you get help. Remember that (most) people like helping those around them.
That being said, there are some things that you just won't do enough times in your life to make it worth learning well enough to do solo - buying a house comes to mind for this category; you're probably best just paying a realtor to help you out. It may be expensive, but at least you know (as long as you got a good one) that they'll do it right.