it's not. you just have to find a range of tasks that you are able to perform at a high level at, and then make sure that your job is doing it, with confidence, day in and day out.
if the link in the other comment is true, it seems like their senior salary range is 200-300k/year. in that range, the excuses stop, and the results begin, or you're fired, have a nice life.
in the real world it actually begins at 100k but technology skews this figure much higher since basically anyone with a pulse and a keyboard can make 100k in this industry.