Are you scared of your job? If not, perhaps it's time for a change. Noticed that within the last month, three close friends all found themselves in new roles that are - in all cases - the biggest job they've had to date. All of them admitted to, at various points, being scared by the idea.
Are they stressed? No, more excited than ever. Are they failing? No, all three are doing the best work of their lives.
So maybe it's time for you to ask yourself - are you scared of your job? If not, perhaps it's time for a change.
(oh, and we've got plenty of jobs at YouTube that should scare you :) )