It is recognized that a psychologist's effectiveness depends upon his or her ability to maintain sound interpersonal relations, and that temporary or more enduring problems in a psychologist's own personality may interfere with this ability and distort his or her appraisals of others. A psychologist shall not knowingly undertake any activity in which temporary or more enduring personal problems in the psychologist's personality integration may result in inferior professional services or harm to a patient or client. If a psychologist is already engaged in such activity when becoming aware of such personal problems, he or she shall seek competent professional assistance to determine whether services to the patient or client should be continued or terminated.