The psychologist and philosopher C.G. Jung (1875-1961), reminds us:

“Even a happy life cannot be without a measure of darkness, and the word happy would lose its meaning if it were not balanced by sadness. It is far better to take things as they come along with patience and equanimity.”

If you are looking for happiness you must to know the taste of sadness.  When you know sadness you will appreciate happiness as it comes your way.

The lesson is: when you know what you do not want, you may know what you do want.

Therefore: only when you what you want you will attract it.