"​'Man In Me' was the first song I sat down to record for myself in about six years, which is the reason I thought it was so important to release first. It's a very intimately visceral moment, a sort of play-by-play inner monologue, taking my first steps through a really hard time.​" The accompanying video, directed by ​Stephen Kinigopoulos, "​ ​emphasizes the intensity of a moment held and held and held. For me, this video is like holding a stare for so long that it hurts. It's like knowing you should let go, but you keep holding on cause you can't say 'when,' and playing with that tension lying right beneath the surface. You know something's up, but you just can't put your finger on it.​"

Diaz was originally raised in Lancaster, Pennsylvania surrounded by a family deeply immersed in music: her grandfather was a tenor in the Greenwich City Opera, both of her parents taught music lessons (piano, guitar and ukulele), her father played in a Zappa tribute band and her brother plays in a metal band. She moved to Philadelphia in her teens to have closer access to broader music education, before eventually enrolling in (and dropping out of) Berklee College of Music and moving to Nashville to more seriously pursue a career as a songwriter. After cutting her teeth in writers rooms in Nashville, Diaz moved to Los Angeles honing her songwriting skills and playing in numerous projects. After a very tumultuous relationship and break up, she bought a truck and moved back to Nashville where she became a go-to songwriter. As things slowed down, Diaz felt she had the time and space to fully confront everything in her life with a newfound sense of clarity. Over the next two years, she wrote over 100 songs, one of which is "Man In Me." The songwriting expertise she had developed over the years is now championed in her own strikingly original and emotional music.