Remember that you are only responsible for you own actions and reactions. Our part is to allow acceptance and forgiveness in our lives, including the forgiveness of ourselves. Sometimes we just have to let go of particular relationships as they have run their course and no longer useful or to allow it to be different to what it has been. Believing a relationship "should" be a certain way or that unhelpful relationships "should" be held on to are limiting beliefs. Far better to be asking for relationships that are going to be beneficial, take you closer to your life goals and to teach you something. A useful book is "Loving What Is" by Byron Katie mentioned by Paul in the AfL course. This can help you to get a new perspective on relationships and help you to take responsibility for your own thoughts, emotions and reactions, leading to more acceptance of others.

Hope this is useful