Many great points. A little long for motivation posters, but quotes to put on a wall, at least.
"Be still" - that's my favorite I think. It's the ultimate sign of control. Being still when everything is in high speed, taking a step back, reflecting, giving the mind time to process. Being able to do that, against the brutal stream of events and short-lived emotions, against everyone else who's running while juggling, that's true power. Not giving into the siren song of the mainstream.
And yes, I always preach and try to live a balance. There are some ideals that I'd love to get closer to, which don't require a balance - like having pure intentions in good deeds, without expecting anything in return, not even from the universe. I don't need a balance there, it's something within me that does not affect others in any way, nor can it bring harm to me (it's still conscious giving, not just throwing favors at anyone who asks for it).