You've characterized your performance as "bad", but I'd challenge you to do a little more analysis. You can learn a lot from retrospecting over projects you've

You've characterized your performance as "bad", but I'd challenge you to do a little more analysis. You can learn a lot from retrospecting over projects you've lead, especially as they transition into the hands of other people, who will inevitably find faults that you missed. You're probably not bad generally but made some more specific mistakes. Maybe you rushed in without thinking about the use case. Maybe you didn't seek input early and had to go all in on a flawed design. Maybe your design could be made more modular with some careful diagramming. If you get specific in your self review, you'll probably find a few actionable lessons, which will be more useful than this general sense of "badness". By the way it takes competence to spot your own mistakes. Cheers.