Are people more likely to remember good things than bad things?
People are more likely to remember good things than bad things. The context states it is easy to remember the good thing, but we can quickly forget the bad thing. This tendency means bad experiences can be set aside, as when Peter seemingly forgot Jesus' prediction of his ignominious death.
Les teaches that we are all capable of forgetting bad things if we want to. He says it is easy to remember the good thing, but we can real quickly forget the bad thing. He illustrates this with Peter, who at this point had totally forgotten that Jesus had indicated Peter would suffer a very ignominious death. Instead, Peter was enraptured with the idea that if Israel would repent and believe, their Messiah would return and they could yet have the kingdom.