It has been scientifically shown that you can reduce the 'stress impact' of any event with one little trick. That 'trick' is to STOP thinking about the event the moment that it is over. Here's why:
1. The 'stress impact' of any event is influenced by the 'total' cortisol (the stress hormone) you produce, both during the actual event and immediately afterwards.
2. Continuing to think about something and 'dwell' on it after it is over prevents your body from recognising that the event is over. If the event was stressful, your body will continue to produce cortisol for as long as you continue to think about what just happened.
3. In this way, little things can be turned into great big stressful events if you continue to dwell on them for a long time afterwards. The 'total' cortisol produced by your body if you continue to 'dwell' for a long time ends up being HUGE, despite your body producing only a tiny amount of cortisol during the actual event.
YOU own the power to let something stress you, or not. Use it!
Zoccola PM, Dickerson SS. Assessing the relationship between rumination and cortisol: a review. J Psychosom Res. 2012 Jul;73(1):1-9.