What does science say is the most difficult unit of your Forgiveness Process Model of 20 steps?
We first have to keep in mind that the science basically is looking for generalities or that which is typical. So often, this quest for the normal or typical overlooks the individually personal characteristics of many people. With that said, we tend to find that many people say the initial decision to forgive, to commit to the forgiveness process, is the most difficult unit of the Forgiveness Process Model. I think this might be the case because change or transition can be scary. If you think about it, moving to a new city or starting a new job or starting a new exercise program as you walk through the gym doors for the first time can be a challenge. Starting on a forgiveness path represents hard work and unknown challenges. I think this is why many people say that this is the hardest part of the forgiveness process.
For additional information, see The Four Phases of Forgiveness.