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You must be suffered from Attention deficit-hyperactivity disorder (ADHD). ADHD has been described as a neurobiological disorder that affect a person's capacity to focus and sustain attention, control impulsive behaviour and regulate activity level in developmentally appropriate ways.
ADHD is characterised by three traits : Inattention, Impulsivity and Hyperactivity. As a result, people with ADHD experience difficulties in many of the tasks required for effective functioning in school or work, such as : paying attention, starting and completing work materials, producing written output, interacting with others,taking turns and keeping still/seated.
Do seek professional assiatance or psychologist is this is the symptoms you are having.