To love yourself is to heal yourself. (A Course in Miracles)
To love yourself is to see only that part of you which is lovable. When this is done, self-love is felt. In the presence of self-love; somehow the fear, the shame, and the guilt all melt away. Absent of the stress from these negative emotions, the mind and body begin to function optimally. This is healing.
When you are healed, you can then look upon every other person to see each of them in this same way. All that which is lovable in you is also true in them. Only love is lovable, and love is the same in each of us because it is one. There is no person absent of love within—though, through shame and guilt and punishment, people have become blocked to various degrees.
Forgiveness is the act of seeing only that part in a person which is lovable. All the rest is error, it is unreal, and it can easily be undone just by letting love melt it away. In the end, it is as though all that negative garbage was never real—for the simple reason that it never was.