I've had those symptoms for years. I lose my train of thought when I talk ("trail off"), mental energy fluctuates like mad, mind goes off on tangents like crazy and makes it impossible to focus/socialize. You need something to improve your focus and concentration and there could easily be other factors that you're dealing with. I am mixed manic and have had very few breaks over last three decades but meds that have helped have been zyprexa (AP) which decreased my agitation, ritalin and adderall both of which did same thing and helped me focus, recently tegretol which did same thing and evened my moods out and slowed my thoughts when I talked and made it easier to socialize. But they all have lots of side effects.

I can sit and read things with good concentration and I completed an engineering degree but when it comes to socializing I just can not focus and mental energy is out of my control. There might be an anxiety component but there's more than that I know. There's a fine line between good and very poor concentration.