Happiness is in the journey, not the company/product/money/measurable.

Happiness is shared with other people, and rarely an individual achievement.

But... Unhappiness can also be chemical reactions in the brain. There's nothing wrong with seeking help if you're having any kind of emotional issues. Quite the contrary, it's very admirable to seek out help. And admirable to get on medication if that's what's needed. If the unhappiness is bad enough, don't tackle it alone.