Psychologist: The best way to recall a certain word or name that one is having trouble remembering is to occupy one' s mind with other things, since often the more we strive to remember a certain word or name that we can' t think of, the less likely it becomes that the word will come to mind. The principle that underlies the psychologist's argument underlies which one of the following arguments? ["The best way to overcome a serious mistake is to continue on confidently as though all is well. After all, one can overcome a serious mistake by succeeding in new challenges, and dwelling on one's errors usually distracts one's mind from new challenges.", 'Often, the best way to achieve happiness is to pursue other things besides wealth and fame, for there are wealthy and famous people who are not particularly happy, which suggests that true happiness does not consist in wealth and fame.', "The best way to cope with sorrow or grief is to turn one's attention to those who are experiencing even greater hardship, for in many circumstances this will make our own troubles seem bearable by comparison.", 'The best way to fall asleep quickly is to engage in some mental diversion like counting sheep, because frequently the more one concentrates on falling asleep the lower the chance of falling asleep quickly.']