The songs included on I’m Not Sure Yet changed over the course of two years; his only vision was to make “a project full of songs that I loved and I wanted people to hear.” Lyrically, things to tie together as each song sees Reece writing about himself. The tracks relate to love, getting older, and learning to deal with hardships in life like mental illness. Speaking on the connecting threads, Reece says, “I wanted to have a theme of maybe a little bit of a brain vomit but kind of like — a brain vomit that's a little bit… put together as well.”