What if you find that your ambition is rooted in a lack of self-compassion and you don't need achievement as much as you thought you did? You seem to be starting from the position of thinking you know what you really want.
That would be a very interesting conclusion. It might turn out that actually, you don't Want (in the intrinsic sense) that 80h per week job, or that fancy expensive house. Perhaps a caravan in the woods is enough.
I might be misreading your subtext, but it sounds as if you're implying that ambition is a universal pro.