When you have something and it is yours, the value of it is deminished. When you have let it go and no longer can claim it to be yours, why is its value increased. Unfortunately some times you cannot go back, you cannot start again, you will never be able to claim what once was yours as yours again.
Some things cannot be unbroken. Some things cannot be forgiven. Some things cannot be forgotten. Some things cannot be reclaimed. Some things cannot be resolved.
This is the hardest lesson of all.