The trick is: you have to feel good for no reason.

The best thing about the past is that it's over. The best thing about the future is that it's yet to come. The best thing about the present is that it's here now.

The greatest personal limitation is to be found not in the things you want to do and can't, but in the things you've never considered doing.

People wait for something to happen in order to be happy; the key is to be happy regardless.

It's an attitude that has to do with curiosity, with wanting to know about things, wanting to be able to influence things, and wanting to be able to influence them in a way that's worthwhile

Brains aren't designed to get results; they go in directions. If you know how the brain works you can set your own directions. If you don't, then someone else will.

You can stop anything but a person with a good attitude.