“Content” simply means you feel as if you could live life with what you have. It doesn’t mean you can’t WANT more. It doesn’t mean you can’t hate how badly the system is bending you and others over. It’s simply a state of being that is, “at the end of the day, none of this is unbearable. I will continue living, and as such, there’s no need for an extreme emotional response.”
Drive, desire, fight… all of it can exist, and you can still maintain contentedness.