Forgiveness is not a form of self-sacrifice. Forgiveness is not pretending that everything is just fine when you feel it isn't. This is perhaps the most difficult concept of forgiveness to understand because, sometimes, the distinction between being truly forgiving and simply denying or repressing anger and pain can be deceptive and confusing.
Plastering a smile on your face and "making nice" is not forgiving. Either we forgive, or we do not -- there is no halfway. And we must be careful to be honest with ourselves if we are not ready to forgive, because, in the long, run it is better to admit to and deal with our inability to forgive than just to pretend to forgive.