Just as how Charlie the protagonist was given a second chance to live after a horrific crash, aren't we also saved from death and called to live a meaningful life?
Weighed by remorse, Charlie made a pact with his young brother's lingering spirit to meet everyday to learn to play baseball--that was his brother's dream when still alive. Eventually compelled to breach this promised appointment, Charlie rose to head out to sea and save the sailor girl whose shipwrecked person was projecting a plea to be found.
It seems such an apt metaphor for this life: Saved to save others. Don't get hung up on past failures. Do what you gotta do and sail out to the life of adventure awaiting you and those you save.