I wish I'd said that

is an excellent book by Maurice Silver (isbn 1-86105-285-5). As usual I'm going to quote from a few pages:
Advice is like snow - the more softly it falls, the better it takes hold.
Don't wait for your ship to come it; swim out to it.
A stumbling block is a stepping-stone that you tripped over.
Make a point to do something each day that you don't want to do.
Error is the discipline through which we advance.
Men inevitably become indifferent to anything they do often.
There can be no economy where there is no efficiency.
When you are through changing, you're through.
Fear is like a darkroom where little doubts gets developed.
The mind grows rich from what it receives; the heart from what it gives.
It is not doing the things we like to do, but liking the things we have to do that makes life pleasant.
Do not look where you fell but where you slipped.
Rudeness is the weak man's imitation of strength.
The instant we feel anger we have already ceased striving for truth and have begun striving for ourselves.
If you can find a path with no obstacles, it probably doesn't lead anywhere.