Hi, I am a 27 year old male from Bucharest, Romania. Just call me "jos_iliescu."I have always had very serious concentration problems in kindergarten, school, high school, college, and during my graduate studies and work experiences. I find it impossible to concentrate on reading material that I don't find interesting or very easy, or I simply read it without concentrating on it at all. In groups, I oftentimes find it difficult to stay focused on what is being said. My mind usually just shuts down, and I start thinking obsessively about my own problems and/or ideas. I have also had a sense of under-achievement, on not meeting my goals. This feeling has become even more acute during the last years, and particularly this last year. I make quick decisions without thinking enough about (bad) consequences, I oftentimes talk first and think later, I sometimes have mood-swings, I oftentimes daydream - even in situations when I should concentrate on something else. Overall, I am totally unsatisfied with how my brain works. I can only concentrate intensively for short periods of time, at most 2-3 hours for tests such as the SAT, and with immense efforts - while mentally "collapsing" afterwards. I've always considered myself very absent-minded, and tried to concentrate more, but this doesn't work too well, in spite of my efforts. I suspect myself of having ADHD. Can you please help, as this is affecting me on so many levels? Many thanks in advance!