[haleudo]

All good advice. I especially agree with the first line as a solid foundation. As long as you don't sleep well, forget the rest. And as long as you don't exercise regularly, the regular sleep will be much harder.

One thing I'd add though is: A tidy mind. Clean up your thoughts. If there is something you don't understand or that seems inconsistent, seek understanding instead of just ignoring it. Of course you need some tradeoff, but too many people just live with constant chaos in their heads and BS-tting they way through life. By extension, your surroundings shape your thoughts. A somewhat tidied up apartment, clean kitchen sink and bathroom/toilet, fridge, desk, hard disk, inbox, those things work wonders. Doesn't have to be spotless, but chaos just distracts and creates overhead that can make you miserable.

(Obviously, some chaos sparks creativity, but there is a difference it a big box with assorted "creative" items versus not finding things on your desk because of all the crap on it.)