I have been following Naval on twitter and listening to his Podcast, and I have come to admire the way he think things through. Here is one of his tweet and maybe it will resonate with you:
Timeless:
Science, math, philosophy, rhetoric. First principles. Creating art & business. Family & lifelong friends. Habits to calm mind & body.
Temporary:
Politics, news, entertainment. Memorizing facts. Hourly work. Transactional relationships. Drugs & doctors for mind & body.
Frank's Blog 