Love and forgiveness go together. In order to love ourselves and others we need to forgive ourselves and others for hurts real and imaginary. The course in miracles tells us all hurts are imaginary and whether or not you agree with this or not, the fact remains, that you suffer when you feel hurt.
Exercise Dissolving Resentment.
There is an Emmet Fox exercise for dissolving resentment that I have found to be really powerful in freeing up old hurts and allowing me to feel more loving and energetic.
Sit quietly, and close your eyes, allow your mind and body to relax.
Then imagine yourself sitting in a darkened theater, and in front of you is a darkened stage. On that stage place the person you resent the most. It could be someone in the past or present , living or dead.
When you see (or feel) this person clearly , visualise goods thing happening to this person - things that would be meaningful to him. See him smiling and happy. Hold this image for a few minutes and then let it fade away.
Next step, as this person leaves the stage, put yourself up there. See good things happening to you. See yourself smiling and happy.
Be aware that the abundance of the universe is available to all of us.
Practice this exercise daily for a few weeks and I guarantee you will feel a big change in your energy , and wonderful increase in your happiness.