We confuse being happy with being fulfilled, or simply not being miserable. If you constantly try to be happy, always searching for some kind of amusement, youโll eventually end up miserable. Every time, no matter what.
If you accept not being happy for a while and find yourself a goal, any kind of goal, as long as you genuinely believe in it and start pursuing it with everything youโve got, accepting your flaws and not expecting perfection, but giving your full effort, misery slowly goes away.