Yes I very much relate and find it normal that when we think we are putting on a face and are not good enough we are going to lose energy

But trying to put on a face with every person I talk to, trying to understand people’s emotions, replaying past hurts and other people’s words in my head, being upset over not being good enough, it’s all too much.

Its sounds like you’re an introvert, if so its normal that engaging with others would take more energy.

In Buddhism part of the idea of the middle way is that you enter the flow instead of resisting the flow. It is in when you’re in the flow that you have access to all the energy you need.  It is at the extremes that we feel the loss of energy, or expending more energy then we are creating.

Part of the loss of energy your feeling comes from the labels your attaching to the experience – putting on a face, trying to understand other emotions, replaying the past. I’m exhausted just thinking about it. The good news is you identified the area you need to work on to find a middle way. Is it possible to interact with others without thinking your putting on a face? Do you always have to understand others feelings? Does replaying conversations over and over again help you? Is judging yourself as not being good enough helpful or a mass energy suck?