I am in a university and i notice all the time that there are people who pick things up in class quickly and those that do it more slowly. But the main key is that everyone picks it up, and can understand it if they apply the time that is required for them .

Everyone learns at a different pace, so don't give up OP. Just take things at a slower pace if that helps. Don't beat yourself up, just because you learn things more slowly it is fine.

I know how you feel about staying in and being afraid of the future. I get into cyclical thinking quite often, where i begin to pile up all my failures and mistakes on top of each other and i panic and think i will never succeed. BUT when that happens, i try to clear my mind by taking a shower, going for a walk, or watching some tv and I can re-evaluate everything i felt, and i realize if i tackle one thing at a time it is manageable.

So don't give up. Take things slow and one at a time.