Ask this question to anyone you know, and 8/10 of the people will tell you that they are quite forgiving. Most will start preaching what their religious values are and how important the forgiver becomes.
Now, put this person in a real test.
Will you forgive a person who backed up into your brand new Beemer?
Will you forgive someone who borrowed $1000 and never paid you back?
Now girls always have best friends, tell me something, will you ever forgive you best friend if she stole your husband, ok maybe she didnt, but what if you 'suspected' she was planning to...
These are a few examples, I agree the last one was extreme.. but as humans we find it difficult to forgive.
The Quran has taught us that forgiveness makes us better person, no matter how much the other person wronged you, you should search within your heart to forgive him/her.
Our beloved prophet, the greatest man to step foot on this earth was well know in forgiveness. While announcing Islam, a lot of people turned him into their enemy and made him suffer in return. Given all those sufferings, he never stopped his mission and was always forgiving, even under extreme measures...
~ When he first announced the religion of Islam in Mecca, a lot of people opposed him. One day as he was walking around Mecca, he saw an old lady struggling with her belongings. He went up to her and asked if could be of any assistant. The lady said she was moving out of Mecca and was planning to settle somewhere quiet. Upon enquiring on the reason for her departure, the phophet (pbuh) learned that lady was leaving "... because of this man called Muhamad, he came with his religion and now people are divided, I can't stand his doctrine and its better for me to leave Mecca". Obviously the lady had no idea how Prophet Muhammad (pbuh) looked like. SO the prophet help the old lady and they started strolling away from Mecca. Throughout she kept on swearing and cursing this man with his religion. The prophet was listening to her patiently. Once she reached her destination, she thanked the prophet and asked him what his name was. He said, Muhammad. Are you the man preaching Islamic religion? Yes. The lady was amazed by this man standing in front of him and carrying her luggage. She stood there speechless and finally uttered: There is only one God and Muhammad is the messenger of God.
I hope we can all learn patience and forgiveness from our Beloved Prophet.
PS: I am by no means a religious scholar. I would appreciate corrections on any error of the above.