You can do something in an instant that will give you heartache for life.
Think before you speak and think before you act. Then proceed forward in a way that will be pleasing to God. If you follow this simple rule, you will carry less heartache through life.
Chapter 2 - Plea for Unity and Humility. If there is any encouragement in Christ, any solace in love, any participation in the Spirit, any compassion and mercy, complete my joy by being of the same mind, with the same love, united in heart, thinking one thing.