I commented earlier about 4HWW from Tim Ferris, but one post from the his blog has continued to resonate and help me through the ups and downs, especially when you feel like you have hit the wall.

It is actually about a letter written by Seneca a famous Stoic philosopher. Take 30mins to read, will be worth it. Stoic philosophy in general has really helped me build a framework/value system.

Excerpt: "It is not that we have a short space of time, but that we waste much of it. Life is long enough, and it has been given in sufficiently generous measure to allow the accomplishment of the very greatest things if the whole of it is well invested."

http://www.fourhourworkweek.com/blog/2009/04/24/on-the-short...

I am 26/running my own distribution company + working full time sales/bus dev for enterprise tech company/side FB game project - applying for YC/Working PT as Crossfit instructor and training (exercise is a great break)/Living in Norway on my own (away from family/friends but still stay in touch online as I can).

Hope it helps!