Any emotion (or anything or anybody for that matter) can have an energetic charge for us. It is that charge that we are looking to dissolve with EFT so we can have freedom or peace around whatever it is. We will still remember it, but it doesn't have any charge for us. That's real emotional freedom, or peace.
You find peace not by rearranging the circumstances of your life, but by realizing who you are at the deepest level ~ Eckhart Tolle