The Butterfly Effect

[Infanticide] With his brain terribly damaged and aware that he is committed to a psychiatric facility where he will lose access to his time travel ability, Evan makes a desperate attempt to change the timeline by watching a family video, which shows his mother just before she was about to give birth to Evan. Evan travels back to that moment and strangles himself in the womb with his umbilical cord so as to prevent the multi-generational curse from continuing, consistent with an added scene where a psychic palm reader tells Evan "you have no lifeline" and that he does "not belong to this world".