Even though you train hard and have goals......you are not a professional runner.  When training / running become  too much of a chore, or life happens, you will miss some runs.  No biggie.

I would note that professional runners are keenly aware of the necessity of some down time.  It is only recreational runners who think a couple of weeks of very low mileage or even zero mileage per year will have this horribly negative impact on their fitness and I have been just as guilty of that as anyone else.