I hope this helps a bit:
There are two days i every week about which we should not worry , two days that should be kept from fear and apprehension. One of these days is yesterday, with its mistakes and cares, its faults and blunders, its aches and pains. Yesterday has passed forever beyond our control. Even god cant change yesterday. We cannot undo a single act we performed. Yesterday is gone beyond recall.
The other is tomorrow , with its possible adversities , its burdens, its large promise, and perhaps its poor performance. Tomorrow is also beyond our immeditate control. Tomorrow's sun will rise, either in splendor or behind a mask of clouds, but in any event it will still rise. But until it does, we have no stake in tomorrow, for it is yet unborn..
Living One Day at a Time 