The underlying problem is to figure out what you really want. Yes, I've felt that feeling of uneasiness in "wasting" time a lot, especially as I moved into jobs which significantly increased the monetary value of my time. But one thing I did know was that I did not value money as much as I valued the time I spent meeting people, being outdoors, reading books or just thinking about things.

Another lesson that self-help books give out a lot is that if you don't decide the course of your life, others will do so for you. I suspect that most people take money as a proxy for success and happiness and hence keep desiring more of it. Ironically, our consumerist environment makes us spend even more as we earn more...making us want to earn even more.

Anyways, this is simply hypothesis. I can't say that I've figured out things, but I do think I am on the right path.