This has been my experience as well. Their ambitions must align, at least somewhat. If ambitious person A wants to go one direction and ambitious person B wants

This has been my experience as well. Their ambitions must align, at least somewhat. If ambitious person A wants to go one direction and ambitious person B wants to go another direction, it probably won't work. But being around other ambitious people at least gives you the opportunity to meet someone with ambition and goals that align with your goals.