Your diet contains way too much polyunsaturated fats, and not nearly enough long carbon chain saturated fats from large animal sources. Eat high fat content ground beef every day. Your brain and nerves need saturated fat from large animal sources to function properly. DHA from fish, or fish oil supplements help too. Eat more whole eggs. Caffeine really does a number on proper brain function. Stop that.
Quit caffeine, what are you some kinda sissy? Caffeine is good for your brain it delays alzheimers.