I've felt like this as well. I have kind of gone through life in this blah state of mind and I struggle to find true joy and happiness. I don't have many interests, and though I do have good days I don't really know if what I am feeling is "happy". I've actually found myself getting irritated with my boyfriend when he is laughing because I'm kind of like why cant/don't I feel this?

Hopefully therapy can help get us to a point where we can start to experience the happiness that others do.