lack of space

When we are exhausted, feeling stressed or overwhelmed, more conflicts arise. We have no energy left for the consideration of others and use the remaining energy partly in a rigorous form to achieve what is up in the moment. We can already see that at the supermarket checkout. We compensate the lack of space for ourselves by not allowing space for others. That’s quite understandable. The more we are aware of ourselves in this lack of space the less we have to go this route of the unconscious aledged justice and are able to use our personal responsibility.
How about the following considerations when you are at such a stress point again:

Can I acknowledge compassionately that I just have not enough space for myself, or do I have to refuse it with anger?