I lied to my mom about being in college

I told my mom I was in college, when I am not. I am 29 and I work as a sales associate, I don't really have a future and I live with my parents. I told my mom this lie for many reasons, and I am ashamed. I am ashamed because I know that she sacrificed everything for me, and she is the one who raised me. I am ashamed because I have never done anything to make her proud. I have never made a real effort to work hard and improve myself. I am ashamed because I am not good enough and I don't deserve her love. I am ashamed because I know that I have to make her proud, and I never did. I don't know why I lied to her, I just did. I don't know what to do now. I don't want to hurt her and make her disappointed. I am ashamed because I don't want to live with my parents forever. I am ashamed because I am a failure, I am ashamed.