I am an athlete and i have a problem.. only serious advice wanted?

I have been wrestling since i was in middle school and i have been involved in martial science my whole life.... i am a former scout for the us army. i have dedicated my life to the study of combat in all its form.. and my dream since 1994 has been to fight in the UFC however i recently found out that i have brain damage in my frontal lobe... and everyone has told me including my doc that i should no longer compete but i want to accomplish my goal .... what should i do