Forgiveness can be made easier through asking yourself the question:
"If I was able to forgive or let go of this - then how would I feel?"
If you ask the question and feel for the response, and repeat this inner experiment, eventually you might reach a point where you are experiencing the freedom of forgiveness, without ever making the step to forgive and let go.
I hope this video helps in making forgiveness easier, which was taken from a one-to-one session with me.