Anxiety doesn't necessarily cause concentration problems as its own symptom. In fact, it could be argued that anxiety actually improves concentration. Anxiety is the activation of your fight or flight system, which is meant to keep you safe from harm by ensuring you're running away or fighting without distraction.
The first set up is a standard 20-25 pound test rig (depending on the size of the tuna) with a size 1 to 2/0 hook depending on bait size and the size of the tuna. Fluorocarbon leader can be super effective if the fish are touchy (biting infrequently). This set up will be the primary bait fishing set up.
Cooking the Fish. If you've marinated the tuna, use that liquid for cooking the fish; for fish without a marinade, add about 1/4 cup of water in the microwave pan for each pound of fish. Cook the tuna on high power for about 1 1/2 minutes per side for each pound of tuna.