The Conquest of Happiness

In The Conquest of Happiness, Bertrand Russell argues that most people are unhappy, and advises us to expand our interests and hobbies as broadly as possible and to focus less on ourselves. These themes are common to modern psychology, but Russell says it better and more clearly than most contemporary writers:

At the age of five, I reflected that, if I should live to be seventy, I had only endured, so far, a fourteenth part of my whole life, and I felt the long-spread-out boredom ahead of me to be almost unendurable. In adolescence, I hated life and was continually on the verge of suicide, from which, however, I was restrained by the desire to know only more mathematics.

Now, on the contrary, I enjoy life; I might almost say that with every year that passes I enjoy it more. This is due partly to having discovered what were the things that I most desired, and having gradually acquired many of these things. Partly it is due to having successfully dismissed certain objects of desire — such as the acquisition of indubitable knowledge about something or other — as essentially unattainable. But very largely my current happiness is due to a diminishing preoccupation with myself.

Like others who had a Puritan education, I had the habit of meditating on my sins, follies, and shortcomings. I seemed to myself— no doubt justly — a miserable specimen. Gradually I learned to be indifferent to myself and my deficiencies; I came to center my attention increasingly upon external objects: the state of the world, various branches of knowledge, individuals for whom I felt affection. External interests, it is true, bring each its own possibility of pain: the world may be plunged in war, knowledge in some direction may be hard to achieve, friends may die. But pains of these kinds do not destroy the essential quality of life, as do those that spring from disgust with self. 

As with all of Russell's books, there are rich insights on almost every page:

Envy consists in seeing things never in themselves, but only in their relations. If you desire glory, you may envy Napoleon. But Napoleon envied Caesar, Caesar envied Alexander, and Alexander, I daresay, envied Hercules, who never existed. You cannot, therefore, get away from envy by means of success alone, for there will always be in history or legend some person even more successful than you are. You can get away from envy by enjoying the pleasures that come your way, by doing the work that you have to do, and by avoiding comparisons with those whom you imagine, perhaps quite falsely, to be more fortunate than yourself.

[...]

If we were all given by magic the power to read each other’s thoughts, I suppose the first effect would be almost all friendships would be dissolved; the second effect, however, might be excellent, for a world without any friends would be felt to be intolerable, and we should learn to like each other without needing a veil of illusion to conceal from ourselves that we did not think each other absolutely perfect.

[...]

Very many people spend money in ways quite different from those that their natural tastes would enjoin, merely because the respect of their neighbors depends upon their possession of a good car and their ability to give good dinners. As a matter of fact, any man who can obviously afford a car but genuinely prefers travel or a good library will in the end be much more respected than if he behaved exactly like everyone else.

I also liked this point on the ways our unconscious mind can help with problem-solving:

My own belief is that a conscious thought can be planted into 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, and in this way, the unconscious can be led to do a lot of useful work. I have found, for example, that if I have to write upon some rather difficult topic the best plan is to think about it with very great intensity – the greatest intensity of which I am capable – for a few hours or days, and at the end of that time give orders, so to speak, that the work is to proceed underground. After some months I return consciously to the topic and find that the work has been done. Before I had discovered his technique, I used to to spend the intervening months worrying because I was making no progress: I arrived at the solution none the sooner for this worry, and the intervening months were wasted, whereas now I can devote them to other pursuits.

This is one of Bertrand Russell's best works of popular philosophy.