Why do parents depend on children success as their source of happiness?

I'm feeling so bad everyday that I can't make my parents proud like pretty much I would say all my childhood friends are successful in their own ways. Some have businesses others went abroad and now settled there. Even their parents frequently visit and half of them are already in process of marriage. Seems like they cracked the code of adulting or life. Meanwhile I'm struggling trying to find myself. It's so mentally challenging especially when you have self doubt and overthinking problem. This year is about to end and I'm just worried how will 2025 go if I continue living in this mentality. Only thing I've changed within this few days was doing simply 10 mins of exercise. Sure it feels good and all but it's not something I'm internally proud of. Most people like to brag and talk about their accomplishments. I guess if I overcame my fears and reduced self hate then I guess I'll find happiness or something. I don't know