If you don’t believe you can do a thing before you even try, then you’re correct, right out of the gate. (insert eyeroll emoji here)
All your repeated uses of “they” points to a toxic external-locus-of-control worldview. You were always the only limit of yourself. Any other claim amounts to heretical self-dehumanization. You’re not fungible and never were, and anyone who tries to make you believe that deserves the utmost vehement pushback.