I've realized, you know, having turned 40, that rest is just as important as work. In fact, it's equally as important.
When are we going to say cancer is cured? I'm not sure when that will happen, if that will happen because cancer is a very slippery disease and it involves a vast number of cells in the body and those cells are continually mutating.
Learn everything you can, anytime you can, from anyone you can - there will always come a time when you will be grateful you did.