Hi. I Have Had A Concentration Problem Since I Was

Hi. I have had a concentration problem since I was a child. I have NEVER, I repeat NEVER, been able to concentrate on a single issue for more than an hour long. My academics have suffered throughout as a result, but due to my sharp perception and good analytical skills I have been able to get pass through university, albeit with average grades. Now I am working as a lawyer, and I have been suffering a lot as I can not concentrate on my work. I start doing something else in 5 mins after working, and get lost occasionally. I am really forgetful about my tasks as well. Apart from this I show many other symptoms associated with ADD as well, and I need a solution to this problem. I want to know what are my options as I have not consulted anyone as of yet.