What Is Happiness?

Hello Everyone!

So I have been having a hard time recently because I can't find anything that makes me happy. I am worried that ever since I started losing interest in my activities (because of my depression) I will never find the same passion again. I don't quite know what I am looking for, but I just want to feel happiness again. I want to feel like I have a purpose in life, not that I am just working extremely hard for nothing. Right now it feels like I am working and working, hoping that eventually one day I'll be happy, but starting to realize that even if I achieve all I have set out to achieve, these feelings and problems still won't go away. I have always thought that what would make me happy in life is to succeed in my work travel and meet new people and learn new things. But I am curious now: what does everyone think will make them happy in life? Has that thing made you happy? If not, what have you realized or how have you coped with that?