Ambition is good. Ambition that forgets why it started is just running.

Wanting more is a decent engine as long as something is steering. The failure is quiet: you keep the pace and the targets and lose the reason, at which point the effort is no longer aimed at anything and simply continues. From the inside it feels exactly like discipline, which is why it can run for years.

Write down in one sentence why you want the thing you are chasing. If the sentence turns out to be about somebody else’s approval, that is worth knowing now rather than later.