People are terrified of other people or difficult projects because they tell themselves that they could fail or be rejected. Failure can lead to sorrow, regret, frustration and annoyance - all healthy, negative feelings without which people couldn't exist. But then they add, "I absolutely must succeed and must be loved by significant persons, and if I don't, it's terrible and I'm no good." Those are irrational beliefs. As long as people keep them, they'll be terrified of life and will put themselves down when they get rejected.

The emotionally mature individual should completely accept the fact that we live in a world of probability and chance, where there are not, nor probably ever will be, any absolute certainties, and should realize that it is not at all horrible, indeed—such a probabilistic, uncertain world.

If human emotions largely result from thinking, then one may appreciably control one's feelings by controlling one's thoughts - or by changing the internalized sentences, or self-talk, with which one largely created the feeling in the first place.

There are three musts that hold us back: "I must do well. You must treat me well. And the world must be easy." And I sometimes think that as long as we keep the second must, which is socially learned, then some screwballs 100 years from now will manufacture atomic bombs in their bathtub and maybe annihilate the whole human race because they demand that the rest of the world must agree with their dogmas. When we don't agree, they may zap us.

I don't recommend that people speak their minds to their bosses or to somebody who's directly over them. You need to know when to speak your mind and what the penalty will be for doing so. Sometimes it's worth it, and often it's not!

Most people would have given up when faced with all the criticism I've received over the years.

Being assertive does not mean attacking or ignoring others feelings. It means that you are willing to hold up for yourself fairly-without attacking others.