You may have some great skills, but you should always add to them.
Are you a good musician? Learn a different style. Learn a new recording technique. Learn to sing. Seek out new music theory.
Are you a good writer? Learn new features of your editing software. Study some grammar. Seek out new words.
Are you a programmer? Study some new math. Make 'hello world' in an unfamiliar language. Enter a programming contest.
There's always a field just next to yours that you may find a lot of fertile ground in. Never stop learning.
