This paper illustrates the potential of people to know themselves and to utilize self-change procedures. The author describes attempts by three individuals to monitor their aversive feelings through recording the daily frequencies of these feelings. The frequencies then serve as an inner behavior baseline against which they assess the effect of self-implosion, a treatment process for aversive feelings that exposes the client to highly aversive stimuli via imagery leading to the eventual extinction of aversive feelings. Each individual continued to record frequency of feelings, both during and following the treatment period. The results suggest that persons can modify their own behavior through a systematic personal-management approach which need not be limited to a clinical relationship, behaviors that can be observed by others, or the use of strictly operant-reinforcement procedures. (Author/LAA)