You can only have target panic if you have cognitive or conceptual thoughts. Those thoughts create doubt or anxiety in your mind, resulting in the symptoms you describe.
Try not thinking about an elephant. Pretty much impossible, once someone puts the thought of an elephant in your mind.
Now imagine yourself feeling the most sensuous thing you could imagine you could feel, which would probably violate the forum's rules to even discuss here. Imagine being in that situation and trying to think about an elephant. Equally impossible, once your mind is filled with awareness of a physical sensation.
It is difficult to not think about something, but it is possible to substitute awareness for thoughts. If you fill your mind with awareness of the physical shot process, there will be no room for destructive thoughts. Plus, being more aware of what your body is doing during the shot will in itself improve your shooting.
Example: Can you feel your drawing forearm line up behind the arrow at full draw, or are you just guessing at it? Can you feel the muscles in your drawing hand and forearm relax? Can you feel whether your head is moving or not? These are fairly elementary things you should be aware of. There are hundreds of other things you might be able to become aware of. By the time you get to about 10 of them, you won't have time to worry about your shot or what might happen or what you hope happens, because your mind will be too busy being aware of what IS happening.