This is just my interpretation of it. But, to me, it's about being in a stagnant relationship in which the speaker of the song is incredibly unhappy, but they've been staying in it in hopes that things will eventually get better. Finally, he looks his fear in the face and leaves his miserably life of comfort to find happiness again. Finding happiness within yourself before finding it with another person, then being with someone you can actively love.
This is just my interpretation of it. But, to me, it's about being in a stagnant relationship in which the speaker of the song is incredibly unhappy, but they've been staying in it in hopes that things will eventually get better. Finally, he looks his fear in the face and leaves his miserably life of comfort to find happiness again. Finding happiness within yourself before finding it with another person, then being with someone you can actively love.