While this website is for a gym and physical fitness, there's another very important aspect of your growth that should never be overlooked, your mental development. Not only do we need to keep our muscles, bones and cardio vascular systems active and functioning, we also need to continue to develop our brain. You may not be interested in traditional "higher education", but you should always be learning. Read books, listen to podcasts that will teach you something, not just entertain you. Pick up a new hobby that will require you to learn a skill. Keep your brain stimulated and it will last a long time, just like your body.