Themes
I'm haunted by my future goals, not my past failures. I'm haunted by what I may still become. I'm haunted by my own continued thirst for evolution.
— David Goggins

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The repeated haunting looks forward rather than backward. Possibility, ambition and the wish to keep developing occupy the space that regret might otherwise take. The speaker describes an insistent concern with an unfinished self, without claiming that earlier failures are what drive it.
Context reviewed