Lyric discussion by LBC19 

Cover art for So Good lyrics by Louisa Johnson

This song is about staying out late on a school/work night. You know that it is unhealthy to not get adequate sleep for school/work but the desire to be out partying and not miss anything is more important. Teenagers and college students (Even Adults!) should use this song as a lesson to always get good sleep on school/work nights.
By the way, this is a great song! Louisa Johnson is more talented than Taylor Swift (Take That, Swifties!), and this is definitely her best song.