What is the reward of kind or forgiving behavior? In our society, a certain amount of ruthlessness is expected to “get ahead”. Expressions such as “nice guys finish last” abound. What then, is the reward of being forgiving and gentle. It is difficult to answer this question, not because rewards do not exist but because of the definition is and importance of those rewards. This includes a free soul, a clear conscious, better karma, etc. So the better question would be not what is the reward but is the reward worth it?
From my own personal experience, yes the reward is worth it. To others, the material rewards of ruthlessness and expediency carry a much greater reward. This leads to an entirely different set of questions about moral relevancy, the nature of good versus evil, and dozens others. That discussion is for another day though.
What I do know is that I have walked both paths in my life and gained more from the pathway of forgiveness. I sleep better at night. I can look people in the eye. These and other aspects, to me, make it so that I will choose that pathway before the hard cold path.