For God has no given us the spirit of fear and timidity, but of power , love, and self discipline, that is 2 Timothy 1:7. Do you have a lot of worries over circumstances you cannot control?, the thing is one ounce of worry doesn't do an ounce of good.
Letting worry creep in means, you are giving control of the situation over to a spirit of fear, if you find yourself worrying about something, stop and ocupy your mind in a way that solves the problem. Better yet, get your hands busy and put on a spirit of love by serving others end you will realize that God is in control. May you never worry about anything but look up to the one who is able to solve all problems, IN THHE NAME OF JESUS.