There are many people who harbor more than they should as a result of the decisions they may have made, for better or for worse. The worst thing a person could do is to habor these thoughts in their mind and not have an outlet. People a faced with multitude of decisions they have to make each day, typically made with limited information at the time. When looking at these decisions they may have felt like the person was carrying the weight of the world but in retrospect, many times people look back when they overcame and come to the realization that it was not so bad. That is an optimal outcome. What if the decision they made wasn't so optimal and the outcome had adverse or undesired consquences that the person never intended on. They will harbor their thoughts and their thoughts will ultimately consume them if they don't have a place to vent.