What does ambition/ambitious mean to you?

Desire for positive improvement and growth via moonshots, through determination and perseverance while spreading that desire onto others. I regard it as a very positive virtue. - Dreaming for the sake of dreaming and achievement of one's dreams. Regarding giving up as the only case of failure, and competitingly but uncomparingly achieving big things by putting in extreme amount of effort, time and other means without being an obstacle for anyone and without hurting yourself. Shoutouts to Mitty.