Imagine you have a very bad time at work and you are so fed up with your co-workers for months. How would it feel like, if you would be in a position to just tell them:
Go and fuck yourself!
You need to earn it.
I do speak from experience that it feels awesome. However, to get in such a luxurious position you need to work hard, so that one day you posses two things: Fuck You Skills and Fuck You Money.
Fuck You Skills means that you are so skilled in your area of expertise, that it would be very easy to find a new job. What kind of skills you require are very specific for each indivdual. Whether you become a great salesperson, the super effective manager or a very specialized expert depends on your traits and interests.
Fuck You Money means that you have so much money, that it does not even matter, whether you work at all. I am so happy that I have both.