Can you live a life without ambition?
I might just have the perfect answer for you, having come across this question in real life without even pondering about it (not until I met him). Going anon just in case.
I'm an Indian that chose to attend a college about 2200km away from my city. Just so I'd have a better college experience. My ambitions are pretty ambitious - if not being a "crorepati" (Hindi for billionaire), I at least would want to travel the world, own one supercar, and one superbike. This was my state of mind - I believed it was natural to be at least a little ambitious.
Then I met this friend (let's call him M). M's actual house was about 5km away from the same college I went to. So while I got to go home maybe once a year, he did so everyday. He was somewhat poor at academics - it was clear he wasn't really keen on becoming an engineer, he just wanted to pass. I wondered what sort of a future he had in mind for himself - or if he had one at all. I asked him: "Why don't you try understanding this stuff?" (He used to copy a lot)
He goes, "No problem man, I'll pass from here somehow, get a master's degree from a better college in the city [40km away from his home], come back here and become a teacher! No worries - why should I go far away from home?"
I was stunned, and to this day all I can do is ponder over his words. Sure, many around me would jump at this statement of his and call him a loser, but I wasn't biased in that sense - I was simply flummoxed at what the human brain can derive happiness from.
If you don't have ambition, it doesn't matter, I guess... As long as you're happy. No one else can define that for you.