> it sure would have been easier to have done it in my 20's Not necessarily. It might have required less determination to go along with what others around you

> it sure would have been easier to have done it in my 20's Not necessarily. It might have required less determination to go along with what others around you were doing, but a lot of people who try learning subjects like calculus as adults report that it seems easier. They have better focus, and most important, they understand why they are doing it. In short: it's never too late! Study on!