I knew this! I am pretty strong and quick at math/calculus etc. The reason being that I over practiced while learning it.

Looks like I have to do the same now. Simply spend lots of hours after work and focus on being mechanical. It is pretty depressing right, why should I struggle so much when everybody else is having it easy?

But at-least I am passionate about technology/business and hopefully massive repeated practice will pay off. I was reading wikipedia article after your comment and it turns out people with Alzheimer's can remember after a lot of repetition. At-least, I am grateful that I don't have Schizophrenia or something like that.