Hi, i am 16 years old and am quite busy preparing for JEE... But i find it extremely difficult to concentrate.. Whenever i try to focus on my studies many intrusive and obstructive thoughts block my mind. Namely i am fond of girls, and times and again i am lost over thinking about them (very much as a friend, nothing sexual). Again, sometimes i get hyper excited, and indulge various sporty activities like jumping, or dream about things which are obsolate but pleases me for the time-being and hence get distracted. Can you help me focus on my studies and get rid of these problems?