Have fun!
This is my favorite time management principle. Even though it's hardly about saving time per se, but still...
Don't be afraid to have fun! It's OK to have fun. Don't feel guilty for having it.
Having fun is not losing time. So go ahead, grab your snowboard and go to the mountains for a week. Have a dinner with your wife. Take your kids to the waterpark. Try skydiving. Have a motorcycle trip across a couple of states (I did this two months ago on a rented bike, and it was
amazing). Play a video game. Heck, write some code, if that's fun to you!
Have fun.
It's fine. Don't put it off for the "better days" - there's no such thing as "better days" when all the work is done and the goals are achieved. By that time your body might not be capable of having fun anymore. You're getting old, remember? Human intelligence peaks at age 26 and keeps declining afterwards. We all get dumber over time. So go out and have fun
right now before it's too late.
"The most dangerous way to lose time is not to spend it having fun, but to spend it doing fake work."
is my favorite quote by Paul Graham.
Now, the actual hacks: