Thought or thinking is a mental process which allows beings to model the world, and so to deal with it effectively according to their goals, plans, ends and desires. Concepts in our language, which are akin to thought, are cognition, sentience, consciousness, idea, and imagination. As of yet, the English language has not coined more specific words for the exact experiences and endeavors people do in their minds on a daily basis.
Thinking involves manipulation of information, as when we form concepts, engage in problem solving, reason and make decisions. Thinking is a higher cognitive function and the analysis of thinking processes is part of cognitive psychology.
"Thought" is something for which the question of truth can arise at all.
Abstract Thinking is the process of reducing the information content of a concept, typically in order to retain only information which is relevant for a particular purpose.
Critical thinking consists of a mental process of analyzing or evaluating information, particularly statements or propositions that people have offered as true. It forms a process of reflecting upon the meaning of statements, examining the offered evidence and reasoning, and forming judgments about the facts.
Creative thinking is a mental process involving the generation of new ideas or concepts, or new associations between existing ideas or concepts.
Introspection is contemplation on one's self, as opposed to extrospection, the observation of things external to one's self. Introspection may be used synonymously with self-reflection and used in a similar way.
Lateral thinking is defined as a technique of problem solving by approaching problems indirectly at diverse angles instead of concentrating on one approach at length.
Visual thinking or visual/spatial learning is the phenomenon of thinking through visual processing, where most people would think with linguistic or verbal processing. It is nonlinear and often has the nature of a computer simulation.
So now you have so many reasons to think and even so many ways to think.
Just give it a try and start thinking you will feel the difference.
Happy Cognizing !!!