I like "4 Hour Workweek" and its ilk ... particularly the message about not delaying gratification forever (or at least until retirement).

But come on ... does anyone really think that Google or Facebook or SpaceX or etc could have been built without significant personal sacrifice by not only the founders but also the employees?

I'm not saying that you should be worked like a slave ... but if you go into it with the explicit goal of combining comfort AND entrepreneurship ... then you should prepare to be dissapointed.