The reality of what happened cannot be changed. There are many things that are beyond our control, such as the negative effects that others have on us. There are many ways to live life calmly; one of them is by laughing at the wound.
Laughing" at a wound is similar to the concept put forward by Nietzsche about amor fati where in order to make life calm, we must _love fate_ therefore whether it is good and bad, we must interprete and love destiny itself because all these things are far beyond our control, in other words the circumstances occur with its own force and nature.
Wound is not only a word that represents when we feel physical pain, but the meaning of wound can also be a word that describes the state of mind, psychological--- those feelings and life circumstances that are not in accordance with our wishes. For example, when a person is abandoned by someone they loves. From this type of situation, many things can change a person's life and psychology. The person can be said to be mentally injured, his thoughts and feelings. It is no wonder that people who experience it have a high level of depression than most people.
If you are in a state of injury, there are two things you can do to treat and muffle the wound. The first is that you choose to ignore and then get rid of the thoughts that lead to it. There are consequences that you must take if you choose the first option, including the fact that by picking this option it also means that you choose to run from a problem and destiny. Almost as if you are looking for a moment's pleasure and also pretending nothing ever happened; whereas your real self still remembers exactly the situation that makes you hurt in the first place. The second option is that you take everything that hurts you and then _laugh at it._
By saying that one should laugh at the wound there is a real meaning, namely someone who has resigned and sincere and has thoughts about the reality that has been set with the knowledge that there are many things beyond our control. Our task as a human essentially is just to put an effort and find a way out with actical thinking. As they would say: "we cannot change what has happened, but what has happened can change us." It is important to always remember that things can change into a positive or negative direction, depending on how we handle a situation in life.
"Laughing at your wounds is the best way to a calmer life."