You've looked for the reason. You've gone through the list, work, relationships, health, money, the news, trying to find the thing that's causing this so you can address it, manage it, justify it. And you've come up empty. Which somehow makes it worse.
Anxiety with a source at least makes sense. You can point to it. You can say: of course I feel this way, look at what's happening. But anxiety that arrives without an explanation brings a second layer of suffering with it, the feeling that something must be wrong with you for feeling this way at all.
It isn't. That needs to be said plainly before anything else.
The body and the mind carry things that don't always surface with labels attached. Exhaustion accumulates invisibly. Grief finds its way in through doors you didn't know were open, sometimes grief over something you can't quite name or point to, which carries its own particular weight. The nervous system responds to weight it was never designed to carry indefinitely, and sometimes the response arrives before the conscious mind has caught up with the cause. The absence of an obvious reason is not evidence that your experience isn't real. It is evidence that you are human in ways that go deeper than your own self-understanding.
Lament has always been the honest prayer for moments like this, not a prayer that explains, but a prayer that simply names: something is wrong, I don't know what it is, and I need you. If you want to bring this to God without having to make sense of it first, you can request a prayer for anxiety, you don't need to know why you feel what you feel.
There is something in scripture that speaks of a peace surpassing understanding, a peace that doesn't require you to comprehend it before it reaches you. That cuts both ways. If peace can arrive beyond explanation, so can its absence. The not-knowing is not a spiritual failure. It is simply the shape your pain is taking right now.
What you're allowed to bring to God is not just the suffering you can account for. You are allowed to arrive with your hands empty of reasons, with nothing to explain, with only the experience itself. I feel this and I don't know why. That is a complete and honest prayer. It does not need to be more organized than that. If the feeling is closer to fear than to worry, dread without a source, a threat you can't locate, that experience has its own name and its own place to be brought.
The shame of sourceless anxiety, the quiet voice that says you have no right to feel this, that others have real problems, that you should be able to pull yourself together, that voice is not wisdom. It is another symptom. You can set it down. You don't have to earn the right to need comfort.
You are not broken. You are not weak. You are not failing at being a person. You are carrying something you can't name, which is one of the harder things a person can do, and you are still here, still trying to find your way through it.
Bring it as it is. Unexplained. Unnamed. Unresolved. That is enough to bring. It has always been enough. The anxiety prayers gathered here hold space for exactly that, whatever shape yours is taking, named or not.