I've always heard that the problem with winning the rat race is that you're still a rat...;^)

No offense intended.

As for the wanting vs needing, yes it is a Buddhist thing. A great way of thinking and of dealing with the ebbs and flows of life in my opinion.

Benjammin, I don't know what you do or where you do it but I wouldn't ever count on being irreplaceable unless you own the business. And even then, things happen. I was forced to close down a very profitable small business due to the actions of another person that I couldn't foresee nor stop if I wanted to.
There are simply too many unknowns in the world.

John E