"It is amazing how much both happiness and efficiency can be increased by the cultivation of an orderly mind, which thinks about a matter adequately at the right time rather than inadequately all the time." [page 60]
"Our successes and failures do not after all matter very much. ... One of the symptoms of approaching nervous breakdown is the belief that one's work is terribly important and that to take a holiday would bring all kinds of disaster. If I were a medical man, I should prescribe a holiday to any patient who considered his work important." [page 61]
"A man who can center his thoughts and hopes upon something transcending self can find a certain peace in the ordinary troubles of life which is impossible to the pure egotist." [page 64] This is one of many places in the book where it might seem natural to say a good word about religion, but Russell does not.
"Every kind of fear grows worse by not being looked at. The effort of turning away one's thoughts is a tribute to the horribleness of the specter from which one is averting one's gaze; the proper course with every kind of fear is to think about it rationally and calmly, but with great concentration, until it has been completely familiar. In the end familiarity will blunt its terrors." [page 64]
He then deals with a question that recurs in Chapter 7 and elsewhere in the book. Worrying is largely an unconscious activity, so nothing is accomplished if you just convince your conscious mind that Russell is right. Somehow these ideas need to make it to the unconscious. Russell believes that they can. "My own belief is that a conscious thought can be planted in the unconscious if a sufficient amount of vigor and intensity is put into it. Most of the unconscious consists of what were once highly emotional conscious thoughts, which have now become buried. It is possible to do this process of burying deliberately." [pages 62-63]