Dobson wrote this song with Jon Levine, who is a singer/songwriter best known as keyboardist and primary songwriter for the Canadian band Philosopher Kings.
Dobson explained in an interview with the Canadian telecommunications company Telus why this is the most meaningful track on Joy for her: "Set Me Free is definitely the most meaningful to me. It's one of the first songs I did and it was very therapeutic for me. It was as if I had pleaded to be freed from all the negative things, the invisible things which imprison me. I wanted to be released by writing this song."