Reinhold Niebuhr is credited with this prayer, "God grant me the serenity to accept the things I cannot change, the courage to change the things I can, and the wisdom to know the difference."
My wife's colleague at work wisely remarks that there are days when she sorts priorities by deciding what will: (a) keep the company from closing, (b) assure no one gets killed, and (c)prevent a lawsuit. After attending to those priorties, nothing else seems quite so desperately important or urgent. She breathes better and does her work more calmly.
Ministry could stand a touch more of that sort of common sense reality-check. Anxiously trying to do everything and please everyone pretty well takes the fun out of serving. "Strive first for the kingdom of God...and all these (other) things will be given to you as well. Do not worry about tomorrow, for tomorrow will bring worries of its own. Today's trouble is enough for today" (Matthew 6:33, 34).