Sadhguru
Why do I keep feeling frustrated and failed when I look for happiness outside?
Happiness doesn't come from outside
Happiness, unhappiness, pain and pleasure, agony and ecstasy all happen from within you. If you try to get them from outside, it obviously won't work, and you will be frustrated and think something is wrong.
You are digging the ground for mangoes. You are not going to hit mangoes. Once in a while a mango may fall down from the tree.