The biggest waste of time is to do well something that we need not do at all.

Remember that although the distinction can be difficult to draw, loneliness and solitude are different.

When I thought about why I was sometimes reluctant to push myself, I realized that it was because I was afraid of failure - but in order to have more success, I needed to be willing to accept more failure.

Now is now. Here is my treasure.

One of the findings that really interests me is that, although we think we ACT because of the way we FEEL, we often FEEL because of the way we ACT. So an almost uncanny way to change your feelings is to act the way you WISH you felt.

I'm doing a lot of speaking and talking about habits, which is this subject that obsesses me. That's a lot of fun.

Your unhappiness doesn't help anyone else - and in fact, as I mentioned in another answer, happy people are more altruistically inclined. So happiness is not a selfish goal.