If we attempt to hold a beach ball under water, think about how much effort the task requires. Certainly, you can have success doing so but consider how unnatural what you are doing is.
It's like that with trying to exert control over the uncontrollable.
What is the remedy? How do we start to feel more OK with the uncertain, uncontrollable, and unknown, i.e., the very nature of the experience we find ourselves in?
Accept everything, expect nothing.
That's the essence of living simply and skillfully.
Whatever it is that enters into our experience, we accept (which doesn't mean like). We don't reject it or say, "This shouldn't be happening."
And by expecting nothing — and making an effort in this practice — we assure ourselves we don't mentally stray from what is actually happening.