I think in the beginning he is trying to break free from the alcohol (which is his best friend) and he took his chances to stop drinking. " i wonder, like sprinting on a frozen pond i took my chances" Then he begins to "sink and fade" and realizes there is "nothing [he] would trade to feel this way". In the end, he finally gives in and finds his best friend (alcohol) again and he is just running around in circles in the cycle.
I think in the beginning he is trying to break free from the alcohol (which is his best friend) and he took his chances to stop drinking. " i wonder, like sprinting on a frozen pond i took my chances" Then he begins to "sink and fade" and realizes there is "nothing [he] would trade to feel this way". In the end, he finally gives in and finds his best friend (alcohol) again and he is just running around in circles in the cycle.