About a month ago my ex broke up with me because of my behavior (lying, covering things up). Since then I started seeing a therapist and actively working on myself, to try to understand my behaviors and patterns. However, I still feel a lot of guilt for what I put her through.

My question is, would writing a letter to apologize to her be a mistake? I am not looking for an avenue back into her life, I am just trying to own up to my mistakes and give her some closure. Otherwise, I will just focus on myself and leave her alone.

Thanks for any advice.