Choose to be happy and walk in peace!  Spending time, efforts, and energy worried, upset, trying to live up to someone else’s standards, or rehashing a situation or concept can weigh us down.  So, we make a choice to not allow situations to upset us.  We look at the bigger picture, put our trust in God and walk in a constant state of peace, because that is what Jesus called us to do.

John 14:27 Peace I leave with you, my peace I give to you: not as the world gives, give I to you. Let not your heart be troubled, neither let it be afraid.