Attaining our true self
(This is a collection of quotes from the beginning of the book, "Dropping Ashes on the Buddha", by Zen Master Seung Sahn.)
Zen mind is everyday mind. You must keep this mind during every action: eating, talking, playing tennis, watching television. Always keep this "don't know" mind.
If you have free time, it's good to sit Zazen, but if you don't, then just do "Action Zen". What is most important is how you keep your mind at this very moment: Just-now mind!
But be very careful about wanting enlightenment; this is a bad Zen sickness. When you keep a clear mind, the whole universe is you, you are the universe -- so you have already attained enlightenment! Wanting enlightenment is only thinking. It is something extra, like painting legs on a picture of a snake.
The mind that becomes one with the universe is before thinking. Zen is keeping this mind which is before thinking. Academic studies are after thinking. We must return to before thinking, then we will attain our true self.