A neurosurgeon reveals what happens to the brain when you live in the past. Whenever a person replays in his head old mistakes, unpleasant conversations or events, he is actually replaying them. The brain can respond to such memories just as it would to a real threat: activating stress responses and maintaining a state of anxiety. According to neurosurgeon Lee Warren, through neuroplasticity, the brain changes under the influence of repeated thoughts and gradually turns them into stable habits. Therefore, the more often a person mentally revisits negative experiences, the easier it is for them to dive back into anxiety and regret. Warren recommends stopping thinking about the past and focusing on what you can change now. His main principle: the brain improves in what a person does regularly, so it is important to train it, not to dwell on the past, but to look to the future. Pravda Gershchenko / Send content / X / Bluesky / Telegram / Threads.