Research shows that the average soccer player who routinely heads the ball has a 9 point lower IQ than those who do not head the ball. The key issue here is Sub-Concussive Impacts. They accumulate to equal more damage than a single serious concussion. The problem is there is no time out taken. Head the ball then run to follow the play.

I say this to bring up the point that you may also be suffering from Multiple Impact Syndrome. It is very common with football (the brown long one not the round one) and hockey players.

My point is for you to try to accept your current state and learn the many work-arounds and accommodation that can help you lead a full and almost normal life. As you do this, you stress levels due to frustration will lower and you may find yourself improving greatly.

My best to you.