have to agree somewhat with squad.
as well as having the time to do the things you enjoy, you also have to learn to do nothing and enjoy that too without feeling as if you have to fill every minute of the day or class yourself as a failure.
if you like a bit of structure to your week, do some things on a regular day, but for the rest of the time just go with the flow. we rarely go over the doorstep at the week-end but do stuff in the house and garden, and always have a special meal on a saturday evening if we're not going out somewhere. during the week we have things we do on regular days (volunteering on tuesday, a day out on a thursday with picnic regardless of weather) and the rest of the week fits around that. we see friends, treat ourselves to lunch out, catch up on paperwork, i paint and he plays on his playstation, something usually crops up unexpectedly.......and so it goes on.
if you really feel you need more, you have to make a real effort to get out there and do stuff, things aren't going to just come to you, you have to make things happen.