Forgiving others is like riding a bike. It may be hard at first, but you only get better as you begin to practice it.
Forgiveness isn't easy. Start by genuinely asking God to forgive you for your shortcomings. Then with a liberated soul, serve God by finding within yourself a way to forgive others.
Then Peter came up and said to him, "Lord, how often will my brother sin against me, and I forgive him? As many as seven times?" Jesus said to him, "I do not say to you seven times, but seventy times seven.