Philippians 4:4-9
Rejoice in the Lord always; again I will say, Rejoice. Let all men know your forbearance. The Lord is at hand. Have no anxiety about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God. And the peace of God, which passes all understanding, will keep your hearts and your minds in Christ Jesus. Finally, brethren, whatever is true, whatever is honorable, whatever is just, whatever is pure, whatever is lovely, whatever is gracious, if there is any excellence, if there is anything worthy of praise, think about these things. What you have learned and received and heard and seen in me, do; and the God of peace will be with you.
Homily:
You can choose your thoughts, especially when it seems you are helpless to thought. You can even choose to have no thoughts.
As you learn to choose your thoughts, you will learn to choose what serves you, and then your thoughts become your servant.
Choice is a skill, and like all skills, it takes training, and there will be errors along the way, but if you keep at it, you will master it.
Thoughts are an attentive servant, but a distracted master.
Choose to make it an attentive servant.