There is another important type of remembering and that is remembering the Torah that one learns. Now it is true that a good memory is a gift from Heaven and not everyone merits that, but what is in the hands of every person — as is with regard to all good traits — is to do their utmost, to the best of their abilities. We find stories in the Gemara about the greatest sages in the world, the masters of the Talmud, who would review everything they learned every thirty days so that they would not be ashamed when they reach the World to Come. For there it is announced: “Fortunate is the person who arrives here with his learning in hand.” And if that was true of them then we are certainly obligated to constantly review what we learn, and at the very least to acknowledge our low level and review the basic and common halachos.
Another type of remembering that is also essential is remembering the favors, both small or large, that one received from his friend. Such favors should always be on one’s mind, all of one’s life, to repay his fellow for all the good received and to feel indebted, rather than be a denier of good. On the other hand, a bad type of remembering is for a person to remember the negative things that his fellow did to him, for by doing so he transgresses the prohibition of, Do not bear a grudge. In this case it is proper that one do his best to erase the matter from his heart.