That’s precisely why they happen.
Every belief you’ve held on to and pattern you’ve fallen into; every decision you’ve made about your methods and your training; they are all reasonable. If they weren’t, you would have done something else instead.
Maybe the beliefs and patterns worked for you in the past. Maybe your training program would be excellent without life’s other stresses tapping your recovery. Or maybe the only way to break your plateau is to compromise a normal and balanced lifestyle.
And so yes, all of your choices have been reasonable.
But your reasonable choices are keeping you stuck.
It follows that if you want to get unstuck, to break new ground and level up, you might have to make some new choices.
Choices that feel unreasonable. At least until you break the plateau.