Learn a lesson from the trout
“When you first come to the river in the morning, with your rod beat upon the bushes or boughs which hang over the water, and by falling upon the water you will see what sorts of flies are there in greatest numbers. If divers sorts, and equal in numbers, try them all, and you will quickly find which they most desire. Sometimes they change their fly, though not very usual, twice or thrice in one day; but ordinarily they do not seek another sort of fly til they have some days even glutted themselves with a former kind, which is commonly when those flies die and go out.
Directly contrary to our London gallants, who must have the first of everything, when hardly to be got, but scorn the same when kindly ripe, healthful, common and cheap; but the fish despise the first, and covet when plenty, and when that sort grow old and decay, another cometh in plentifully, then they change; as if nature taught them, that every thing is best in its own proper season, and not so desirable when not kindly ripe, or when through long continuance it begins to lose its native worth and goodness.”
Quoted from “The Experienced Angler”, by Robert Venables 1662. I found this quote in “Hook, Line and Sinker”, Shelley Klein, Michael O’Mara Books Ltd, 2001.