When you seem to be stuck in concern, anxiety or doubt, that is the time to calm your mind and center. Either prayer or meditation will work wonders.
When you pray, you center your focus, and weed out that which is not your highest good. When you pray for others, or they for you, this creates a unified energy causing a Mastermind effect.
When you meditate, you release all distractions, and center yourself in the one true power. Worldly concerns drop away into the nothingness from which they came.
In either case, you make a conscious and unconscious connection with the Infinite Intelligence that blesses and grounds you. You can create the same result with a watching a sunset, walking in nature, or simply feeling the wind.
So what will you do to calm your mind today?