when something's on your mind

Do you ever have days where there is something on your mind bothering you and you can't shift it?
I've prayed and tried to leave this thing with God but still it's bothering me. Usually I just get on with something else but today it's snowing and cold.
I'm gonna go and try to prepare my preaching - hopefully God will help me receive His peace and then the problem will still be there but not be a burden.