How do you social with others when you feel worthless and ashamed?

Maybe I'm just viewing myself wrong or being harsh on myself but truth of the matter is, I do want to socialize and want to put myself out there. I don't want to continue living in isolation and away from people. But what can I do, is just that I feel ashamed and worthless always. I feel like everybody has identity, they are known for something. Either they are in college, working or retired. And I have no self identity, it's so difficult to even answer someone when they say what do you do. I just hate lying and covering up like sure in that moment, it's fine but afterwards you feel so guilty and ashamed like why did I lie, I'm studying this or I'm working that place when in reality I'm not doing anything.