Most successes are unhappy. That's why they are successes - they have to reassure themselves about themselves by achieving something that the world will notice.
Do not be a bodhisattva, do not be an arahant, do not be anything at all. If you are a bodhisattva, you will suffer, if you are an arahant, you will suffer, if you are anything at all, you will suffer.
Physical comforts cannot subdue mental suffering, and if we look closely, we can see that those who have many possessions are not necessarily happy. In fact, being wealthy often brings even more anxiety.
If to enjoy even an enjoyable present we must have the assurance of a happy future, we are “crying for the moon.” We have no such assurance. The best predictions are still matters of probability rather than certainty, and to the best of our knowledge every one of us is going to suffer and die. If, then, we cannot live happily without an assured future, we are certainly not adapted to living in a finite world where, despite the best plans, accidents will happen, and where death comes at the end.
In short, I am doing what I can, I suffer with the same universal suffering, and I try to assuage it, I possess only the puny forces of a man, and I cry to all: “Help me!