Living in a state of continual stress can be both counter productive and over time even life threatening. We rarely operate effectively in a state of emotional stupor.
Irritation precedes stress. Irritation can serve as a feedback mechanism that something needs our attention. As we become aware of an irritant we have the choice and opportunity to harness our resources to impact change. Whilst still in a state of sober reflection, we can rationally edit the context, or address some solutions.
The hardest mind shift we need to acknowledge is that the buck stops with us.
The maturity to look ourselves in the mirror and accept that "I am responsible" for the direction my life takes can be taxing for the ego. It is much more gratifying and at the same time destructive to blame people and circumstances for our own feelings and responses.
There are always choices. Avoidance, severing relationships, confrontation, apology, blame, anger, forgiveness and even ambivalence. No one said that it would be easy - not to care - but once we accept that we are the ones that control our destiny not others, life has a habit of unfolding with surprising gifts.