Perhaps one of the most difficult of all of the concepts to grasp or apply is Forgiveness of self and others. We will asses and break down this concept through a straight forward approach given the understanding that to be human is to err. I personally choose to accept that there are aspects of life that are fully beyond anyone's control. Even to those of whom are in apparent control. Getting hurt is  inevitably one of these aspects. So in order to fully apply Forgiveness of self and others one must first forgive oneself of their past mistakes. As well as to forgive oneself for mistakes that have not even yet come to pass.
  In other words don't be so hard on yourself. To be able to forgive others before the mistake ever happens puts you in a state of perspective where you will be less apt to allow your emotions to be in control of your decisions. As well as less apt to expend valuable energy and efforts on the possession and harbor of grudges. Which take up precious space in the mind and the heart and act as blockages that stop manifestation in it's tracks. I forgave you before it even happened even though I am still hurt by it. What has happened is gone, what is happening is here and what has yet to happen with arrive in due time.
This is not an excuse to let people walk all over you though. Always stand up for yourself. One cannot reach any level of change whilst living in comfortability. Rid yourself of your attachments to your comfort zones. Know what your comfort zones are but distance yourself from relying on them. Hurt and pain bring about change and your reaction to hurt or pain directly affects the results that wait on the other side of that discomfort. What has already happened is gone. The way you can rid yourself of the memories of hurt or pain in order to move forward is to start making better and happier memories to concentrate on. For without realizing it concentration on such pain and hurt keeps the feeling of pain and hurt alive and well nourished within yourself. I will mention the importance of the need to accept what happened for what it was before you move on though. Otherwise you will not have truly moved on and whatever you went through is still taking up precious space in your heart and in your mind and is blocking you from manifesting. The following is not an excuse for anyone who has damaged you, your life, or your relationships in any way but merely a different outlook or perspective to assist you in the practice of Forgiveness of self and others. Where there is one thing that exists in the universe it's opposite is just as equally existent. So if I say that the person who hurt you did so from the cause of having been mislead themselves, taught incorrectly or acting in ignorance. Then I also know that the opposite possibility exists. They very well may have been just as disgusting, vile, or inconsiderate as their actions were. Considerably the key to forgiveness is that once you have forgiven yourself in the turn of events it is then easier to forgive others. It is up to you as a person to designate an allotment of time for surrender, Acceptance, space for healing, and finally the assessment of your relationship with that person or persons.