Minimize Interactions With Negative Folks.
Who needs it? You are better off without the negative energy.
As we age we naturally become more irritable and snarky. We have more aches and pains and have less tolerance.
Remember that the snarky person might just be you and not the other guy. And surely the other person thinks you are the unreasonable one.
You might both be right.
Remember to forgive and forget and move on.