Thinking is a kind of covert behavior and it is an internal process. May be regarded as a sequence of symbolic processes to implicitly manipulate ideas or objects that are physically absent to the senses.
Kinds of Thinking
Realistic Thinking
Autistic Thinking
Realistic Thinking is one where you direct your thinking towards problem solving and decision-making.
Autistic Thinking is one where you engage in thinking just for pleasure of it like in the case of daydreaming and wishful thinking.