Sorry I haven't texted you back, (I've been so anxious and depressed) I haven't had time to catch my breath, you know how life gets! Returning to the form of Stuff I've Been Feeling Lately, Sorry I Haven't Texted You Back is a poetic mixtape dedicated to those who struggle or have struggled with their mental health. Divided into two parts, Side A holds 92 poems, titled as tracks, and Side B holds the remixes, or blackout-poetry versions, of those 92 poems. The book includes the evergreen themes of love, grief, and hope. Named after Cook's viral Instagram poem, Sorry I Haven't Texted You Back lands in the crossroads of self-help and poetry.