tips and advice welcome

Hey everyone. I don't post things like this anywhere usually but I'm at a really low point in my life unfortunately and need some help/advice/tips if anyone has any. I'm a single parent to a teenager, don't have family or friends. Just recently came out of a relationship that's has really knocked my confidence. As recently as yesterday. Bottom line is I wasn't good enough for him, and that's been a common theme throughout my life! I work, come home, do housework, repeat infinity. My child is my reason to be alive and my only reason. I sleep a lot, spend a lot of time in my room because I'm very depressed. I start therapy on Thursday to help. If it even does. I want to help myself but I have no faith in myself anymore so anything I think of doing I know I'll fail at. I want to try though. Any ideas for me? Any stories of how you helped yourself? I am on medication also. I'm in the uk 🇬🇧 if that helps! Sorry for the essay!