You're either interested enough [in studying those things] to start now or you're not. If you want to look back when you're eighty and take pride in achieving and enjoy that stuff for fifty or sixty of them, then start now and write off the last ten as finding yourself, which always has a cost and is incurred by everyone. I was always a voracious coder ten to fifteen hours most days of my life. Even then, it's not with gaming, reading, travel, and family/friend development in order to feed my relationships(because code can't share your happiness and doesn't take care of you when you're sick) and give me a little variety so as to be able to think through problems while away from the screen for a little bit.