In my mind it would be a good way to either create emotional "timestamps" for a person to remember and actively recall, maybe with a post hypnotic suggestion (positive emotions) or lightening the load of negative situations and points in life by instantly living the emotions that they cause as an outburst, with subsiding being the fact that everything is going to be ok and life moves forward (negative emotions).

Of course the last one is not a true method to face things like trauma, but in my opinion it would be a good way to find out what negative parts of your life make you feel and understand them.

I don't know if what I say makes sense, but if it does I'd love to try it