Literally the two most important things from the article. Get better at things so you don't have to worry about decline. That simple. Its like a muscle - deve

Literally the two most important things from the article. Get better at things so you don't have to worry about decline. That simple. Its like a muscle - develop it early on and then you can easily keep it in shape without much effort until the day you die, without any noticeable decline (at least until like 70).