Forgiveness/Acceptance/Allowance/Coming-to-terms-with unexpected situations in life that catch us off guard that are perceived as negative initiate what really isn't "healing". That's yet another misnomer. It's a "restoration", a return to balance, to homeostasis.

The body/psyche is always working perfectly. Neither need "healing" - ever. What is required is a re-alignment with reality and that the past is the past which must be forgiven and forgotten if one wishes to return to balance or perfect health, which is our natural state.