It's always easier when you have no time to relax, and you desperately crave that time, which you can spend on yourself. You have all these things in your mind that you always wanted to do and all you need is free time, so that you can relax. It's so much more tougher when all you have is free time and nothing to do, no purpose in life, and your catharsis will come from getting off your ass, finding a purpose in life and doing something. Falling from working a lot to doing nothing is easy, it follows the natural order of things: like a ball rolling down a slope. Going from doing nothing to starting to work is against the natural order of things, in that it involves a decrease in your entropy. Sadly, the state of maximum entropy is not the state of maximum happiness for humans, and sooner or later we have to go and lose some of it.