Small is beautiful . Save on future repetition time by using mnemonic techniques for the most intractable items . A stitch in time saves nine . 7. Concentrate and don't stop thinking. Repetitions should be conscious, not automatic.
All troubles come from ignorance .
If you do not find working with SuperMemo pleasant, then stop Adding items and pay more attention to cleaning your knowledge system from useless or ill-structured garbage. Nothings succeeds like success . Do not cut down on sleep, exercise regularly and give up all hazardous habits like smoking or drinking. Healthy flesh nurtures healthy spirit .