It is possible to have too much of a good thing.
Thinking to get at once all the gold the goose could give, he killed it and opened it only to find-nothing.
If you wish me well, do not stand pitying me, but lend me some succour as fast as you can; for pity is but cold comfort when one is up to the chin in water, and within a hair's breadth of starving or drowning.
Never trust advice from a man in the throes of his own difficulty.
Beware lest you lose the substance by grasping at the shadow.
Straw shows which way the wind is blowing.