The primary cause of unhappiness is never the situation but your thoughts about it. Be aware of the thoughts you are thinking. Separate them from the situation, which is always neutral. There is the situation or the fact, and here are my thoughts about it. Life isn't as serious as the mind makes it out to be.

There are few things humans are more dedicated to than unhappiness. Had we been placed on earth by a malign creator for the exclusive purpose of suffering, we would have good reason to congratulate ourselves on our enthusiastic response to the task. Reasons to be inconsolable abound: the frailty of our bodies, the fickleness of love, the insincerities of social life, the compromises of friendship, the deadening effects of habit. In the face of such persistent ills, we might naturally expect that no event would be awaited with greater anticipation than the moment of our own extinction.

It is assumed by many reformers that the principal and major cause of unhappiness is economic insecurity, but this theory forgets that there are economic problems only because men have not solved the problems of their own souls. Economic disorder is a symptom of spiritual disorder.

Any moment where you’re not having a great time, when you’re not really happy, you’re not doing anyone any favors. It’s not like your unhappiness makes them better off somehow. All you’re doing is wasting this incredibly small and precious time you have on this Earth. Keeping death on the forefront and not denying it is very important.

It’s sad when loved ones die, and few of us look forward to our own demise; hence the perennial quest for an elixir of eternal life, or at least a cure for cancer. But if nobody died, the planet would quickly fill with humans and empty of all the things that feed and provision us. Death clears space for new life; it is the non-negotiable price of admission to the great banquet of existence.

If death is as horrible as is claimed, how is it that after the passage of a certain period of time we consider happy any being, friend or enemy, who has ceased to live?

I might have been your happiness, and became your misfortune. I am the cause of your death, for if I had been a different man, if I had not been wanting in all principles, all foundations of life, there would not have come upon you the shocks that killed you.

Dying is only one thing to be sad over. Living unhappily is something else.

Parents produce beloved offspring who are cut off by death at an untimely hour, just when all promised well. They too have no answer to the question "Why am I thus afflicted?" but the same unreasonable reference to an inaccessible God whose arbitrary will causes their misery. Thus in every walk of life, loss, injury, persecution, deprivation of opportunity, nature's own forces working to destroy the happiness of man, death, reverses, disappointment continually beset good and evil men alike. But nowhere is there any answer or relief save in the ancient truths that each man is the maker and fashioner of his own destiny, the only one who sets in motion the causes for his own happiness and misery. In one life he sows and in the next he reaps. Thus on and forever, the law of Karma leads him.

There is only one cause of unhappiness: the false beliefs you have in your head, beliefs so widespread, so commonly held, that it never occurs to you to question them.

It would seem that our intelligence is the source of our unhappiness in an almost literal way; but it would also imply that our unhappiness is the source of our strength as a species.

The chief problem about death, incidentally, is the fear that there may be no afterlife — a depressing thought, particularly for those who have bothered to shave. Also, there is the fear that there is an afterlife but no one will know where it's being held. On the plus side, death is one of the few things that can be done just as easily lying down.

Certainly I believe that God gave us life for happiness, not misery. Humanity, I am sure, will never be made lazy or indifferent by an excess of happiness. Many persons have a wrong idea of what constitutes true happiness. It is not attained through self-gratification but through fidelity to a worthy purpose. Happiness should be a means of accomplishment, like health, not an end in itself.

Diversion. Sometimes, when I set to thinking the various activities of men, the dangers and troubles which they face at Court, or in war, giving rise to so many quarrels and passions, daring and often wicked enterprises and so on, I have often said the soul cause of man’s unhappiness is that he does not know how to stay quietly in a room. A man wealthy enough for life’s needs would never leave home to go to sea or besiege some fortress if he knew how to stay at home and enjoy it. (Page 32)