Everyone makes mistakes. You can as well, you just need to want. Some suggestions (read aloud in an enthusiastic, you-can-do voice): Deploy to production! On Friday evening! Something that doesn't even build on your machine! Hardcode an universal password into the auth backend ("toomanysecrets" is a classic)! Invert a few conditionals in almost unreachable code! Enforce an overly complicated review system! Be horribly pedantic with every review you do! Skip review for your own commits! Re-write an important component from scratch! In OCAML, C# and TypeScript! While drunk! With no version control!
You get the idea. Or, probably better, ask your boss to fire you for all the good work you did? ;-)