You’re definitely not alone in this. Coughs that hang on forever are the worst.
A former friend of mine swears by a fresh pineapple smoothie when she feels something coming on. Half a pound of pineapple (must be fresh, not canned) and a peeled piece of ginger root the size of your thumb. You can add honey if the pineapple is tart and/or orange juice if you think it’s too thick. Put everything through the blender and drink. If I feel something coming on, it usually stops it; if it’s already there, it shortens it.
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“‘Why was I chosen?’ ‘Such questions cannot be answered,’ said Gandalf. ‘You may be sure that it was not for any merit that others do not possess: not for power or wisdom, at any rate. But you have been chosen, and you must therefore use such strength and heart and wits as you have.’”