The most frequent reason for unsuccessful application of SuperMemo is lack of regularity on the part of the student. In fact, irregular repetitions fall out of the definition of the SuperMemo method. No wonder then that for those who lack regularity success is not forthcoming. Regular sessions with SuperMemo are among the most demanding factors and require a lot of will power and determination. Indeed, SuperMemo is not only a good therapy for poor memory, but it also helps to develop iron will. The importance of regularity arises from the fact that SuperMemo computes optimal intervals that should separate repetitions, and it does not allow the student to delay or advance repetitions. It should not be interpreted as a flaw of the method, but as a inherent property of memory which has fixed mechanisms regulating storage and erasure of memories. Every day of delay, not only increases the proportion of forgotten items, but also results in an inevitable accumulation of work that has to be caught up with in following days. This imposes additional stress on the student who, with each day passing by, is less inclined to return to repetitions. In SuperMemo, the best results are obtained when the student uses the method every day the same period of time. Working every second day, although less effective, is much better a solution than working every second week, etc. Systematic work with SuperMemo is a sine qua non of success, and those who do not intend to work regularly should not hope that SuperMemo will make up for their laziness. To paraphrase a well-known adage you might say that SuperMemo is like sex: you cannot leave it to others. Treat your repetitions like you treat your daily religious or physiological rituals.