I am willing to forgive. I am unwilling to hold onto the feelings of hurt, and enmity.
Imo, you can't "will" or "un-will" holding onto feelings of hurt and enmity. When these issues are sufficiently resolved in your heart and mind, there won't be a will required. It may be that you need to hold onto them long enough to fully examine and understand them, until you no longer have a need for them.