It depends how you measure success...
... I calculate it by the ratio of earnings to effort - that's why I got into IT in the first place, it's pretty much money for old rope when you compare it to proper jobs.
This holds true even more if you're a reasonably attractive female and willing to use that fact to your advantage. There will always be a love-struck technically competent colleague who will do half your job for you in return for a "knowing smile" in order to fuel his lonely fantasies. There will always be a smitten boss that will overlook your mistakes / fecklessness and pass you over in rounds of redundancy on the off-chance that he might get lucky one year at the Christmas party.
I'm a man, but I've seen females being very successful in IT on the basis outlined above. I'm not bitter, good luck to them, I'm just jealous that I can't get away with doing as little work as they do...