Inner peace is the key: if you have inner peace, the external problems do not affect your deep sense of peace and tranquility. Without this inner peace, no matter how comfortable your life is materially, you may still be worried, disturbed, or unhappy because of circumstances. — Dalai Lama
I have a refrigerator magnet with this quote. No matter what is going on around me, I can still have inner peace. No matter what. Be calm in your heart.