/sci/ - Science & Math

AP Chem test tomorrow.
Tips?

/sci/, I'm pretty bad at math. I always thought I was just dumb and slow because I was always the last to turn in a test, or even finish it for that matter. That explanation was the easy way out, because it allowed me to say fuck math, it's not for me and i'm allowed to be bad at it because i'm dumb. Well, that's not true, and math is literally everywhere, so I need to learn it. So, I eventually figured out my real problem with math - paralysis by analysis. I would always be so slow because of how much I would think about/second guess myself about a problem. It started around the time of geometry when shit required more than one step. I was told how if I messed up 1 step I would screw up the whole problem. Well, that scared me, so every problem I would do, every step I would look back at the problem, make sure the numbers were right, look back at my steps, make sure those were right and continue on. This would make problems take at least triple the time everyone else was doing them at. When I rushed, I started making mistakes and messing up everything. So, before this gets unbearably long (probably already is), how do I go about getting more confident and faster at doing math?

TL;DR: Over analyze math problems, making it take forever to solve. How do I get better/more confident at math?