Our humanness dictates our varied perceptions, evaluations, judgments, and expectations. These develop over time based on our physiology, history, and experiences. For some people, they perseverate or hyper-focus and complain that “they can’t get their mind off of ___.” Others overthink things and can’t stop “but-ing” themselves, while others chronically worry and/or have negative, dreaded, or pessimistic thoughts. Some others have racing thoughts, in which they experience their mind buzzing often. The quality of these thoughts may lead to restlessness, relentlessness, and intense feelings of concern, worry, fear, disappointment, and frustration. Read more via Psych Central.