I’m not sure if it falls under Murphy’s Law, or a corollary, or if I can claim it for my own, but it never fails: if you have been putting off a specific task, as soon as you resolve to do it, something will happen to prevent you:
If you mean to exercise, you’ll break your toe.
If you’ve been meaning to start saving, you’ll suddenly take a pay cut.
If you’ve wanted to hang out more with a particular friend, they will move away/ leave town extendedly/ have a time-consuming family emergency.
The examples are endless. The solution, too, comes in many familiar forms: Seize the day. Just do it. Make hay while the sun shines. Eat, drink, and be merry (or spend more time with your family, make a will, or volunteer for a worthwhile cause) for tomorrow you die.
It is a lesson, I admit, that I am frequently reminded of but have yet to learn completely. Make hay while the sun shines.
But then, when you do get hit by that sudden rainstorm (or flu, or headache, or life’s general unpredictability), what do you do? To be sure, it’s harder to make hay. But instead of crying out against cruel fate and resigning yourself to whatever is streaming on Netflix, you could always make soup. Read that book that’s been sitting on your shelf for the last year. Call that friend who moved away before you could hang out more often. Surely not everything you’ve been meaning to do requires a sunny day (or the use of whatever body part you’ve injured, or… )
“Make hay while the sun shines” implies that you can only accomplish things when all circumstances are fortuitous. Of course, you should take advantage of those opportunities. But perhaps the better advice is: Seize all the days – the sunny and the rainy ones.