Other people do not have to change for us to experience peace of mind.

Peace of mind comes from not wanting to change others.

I can have peace of mind only when I forgive rather than judge.

It's not the situation that's causing your stress, it's your thoughts, and you can change that right here and now. You can choose to be peaceful right here and now. Peace is a choice, and it has nothing to do with what other people do or think.

Therefore be at peace with God,
whatever you conceive Him to be.
And whatever your labors and aspirations,
in the noisy confusion of life,
keep peace in your soul.


With all its sham, drudgery, and broken dreams,
it is still a beautiful world.
Be cheerful. Strive to be happy.

Of course, maintenance of peace of mind, at the maximum extent possible, would be the greatest success in a human life.