Equanimity/Composure

Equanimity (or composure) is the state of being calm, balanced, and in control of one's emotions, even under stress or in the midst of difficulty.

Even a happy life cannot be without a measure of darkness,
and the word happy would lose its meaning
if it were not balanced by sadness.
It is far better take things as they come along
with patience and equanimity.
- Carl Jung

Without accepting the fact that everything changes,
we cannot find perfect composure.
But unfortunately, although it is true,
it is difficult for us to accept it.
Because we cannot accept the truth of transience,
we suffer.
- Shunryu Suzuki

Few people are capable of expressing with equanimity
opinions which differ from
the prejudices of their social environment.
Most people are even incapable of forming such opinions.
- Albert Einstein

Affirmation:
I choose to respond to life's provocations,
not with anger, resentment, or regret,
but with equanimity and a focus on positive action.
- Jonathan Lockwood Huie

Further reading: Ancient Wisdom about Uncertain Times

Complaining Creates Unhappiness

Restraint

Staying Positive

Stillness

Luck