OVERTHINKING This word consist of two words ‘OVER’ and ‘THINKING’ THINKING Thinking is the act of using your brain and mind to consider a problem or possibility or creating an idea. It is also the process of using your mind to understand matters, make judgments, and solve problems.. By using your mind to understand matters, create an idea to solve problem.. and perhaps it’s not just working out or it possibly led to another huge problem.. it could lead to over thinking. The prefix ‘OVER’ means More Than Normal, Excessive. So, in a lame man understanding; Overthinking means excessive using of your brain to solve a problem. Overthinking is when you worry about the same thought repeatedly and more than normal.