A middle-aged person ("the glistening mid-life") is sad ("To dry my tears") at being suddenly & unexpectedly alone in life again ("I'm all alone, I'm all alone again"), and comes to terms with their sorrow through an escape to nature, and without resorting to alcohol ("My sober face suddenly comes staring back") or self-blame ("Tonight I've decided to treat myself right").
A middle-aged person ("the glistening mid-life") is sad ("To dry my tears") at being suddenly & unexpectedly alone in life again ("I'm all alone, I'm all alone again"), and comes to terms with their sorrow through an escape to nature, and without resorting to alcohol ("My sober face suddenly comes staring back") or self-blame ("Tonight I've decided to treat myself right").
[Edit: Capitalisation fix]