You're asking the wrong question. You should be asking "Am I an efficient or effective programmer?"
Do I get things in on time / under budget?
Do I avoid common programming pitfalls?
Do I solve more problems than I create?
Do I see simple solutions to complex problems?
Can I refactor terrible code to more easily maintained code?
Can I avoid terribly written code in the first place?
Can I effectively communicate with people in order to get the answers I need without wasting their time with needless questions?
Then you know you're effective when:
You're asked for help often.
You're the go to person by the boss.
You're often asked for your opinion for engineering decisions.
Your opinion holds weight with others.
