I think this song is about missing out on chances to succeed and to fall in love, etc. and this song is the person who has missed all these good chances lamenting their bad decisions, but trying to reassure themselves that nothing too bad really happened.
I think this song is about missing out on chances to succeed and to fall in love, etc. and this song is the person who has missed all these good chances lamenting their bad decisions, but trying to reassure themselves that nothing too bad really happened.