Writer, Agilist, Elder Geek
I know some people who've gone and started their own business. They're entrepreneurs, and frankly, pretty impressive people. They've got their own jobs, and though its work, its work they love.
People often look at such people with envy – they want to make the leap to owning their own business, freelancing, etc. They want to be entrepreneurs.
They already are, the problem is they don't know it.
It is an often repeated statement – "The Perfect is the Enemy of the Good", meaning that if you try for perfection you will not only fail, you won't get to achieve something pretty good.
Let me extend on this and share my findings: the Perfect is the enemy of everything, even mediocrity.
As I coach people, speak, or just help people out, I encounter a similar theme over and over again: people are A) not sure of what they want in life or a career, and B) usually aren't sure "who" they are.
This sounds a bit oddly touchy-feely, but it's important to have an idea of who you are and what you want (Babylon 5 jokes aside of course). When you're positive on who you are and what you want, you're active, focused, enjoying life because you're living it in that moment. Without it you're sort of meandering.
As I said, I encounter this a LOT.