Success automatically takes freedom and time away initially - you'll have to give up on a lot in order to achieve anything. And giving something up is easier if you've at least lived for a while and tested yourself out.
I just turned 31 and I still feel the pressure to get things done immediately, but I'm happier that I had my 20s full of travel, fun, romance and long summer nights. But it was exactly this lifestyle which prevented me from becoming successful at an early age. Pick your sacrifice.