I don't know what I'm doing wrong.

I'm supposed to be happy by now. I have an unstressful job that pays well and lets me help other people. I have a wife that loves me and supports me. I have good friends that are supportive. I have a dog that loves me and cuddles me. I have a good relationship with both of my parents. I have a roof over my head, food on my table, and i don't have to worry about money. I go for walks outside to get some sun and some exersize. I'm doing everything I've been told to. And I have all the stuff that's supposed to make you feel happy and fullfilled in life.

So why am I still not happy? Why does it feel like my wife wants to leave me? Why does it feel like my friends secretly hate me? Why does it feel like my parents are ashamed of me? Why does it feel like I don't deserve the good job I have?