Abstract: The article is devoted to the personal past that is viewed as an existential problem. The author examines the relation of the past to other modes of the time, motives turning people to the past and psychoterapeutic technologies of changing the personal past. After presentation of most radical technologies and description of the problems they might create for one's personality, the author offers to the reader 'milder' technologies described in literature. These technologies allow to interpret the past in accordance with therapeutic goals but without changing the memory.