i personally don't think you can "let it go". you can accept it, or put it out of mind for a time, but i dont think you can ever really let it go compeltely. the past is part of you, and it why you are who are you, and i dont think you can change that. i think you can find a t, deal with issues, develop coping mechanisms, but i dont think "letting it go" is physically possible. you can choose not to care any more, but it is always part of you and i dont think its possible to forget.