Ancient philosophers and modern psychologists agree on the concept of a three-part mind with separate domains for thinking, feeling, and doing. "Psychology traditionally refers to these as cognition, affect, and conation" and the three of them work together as part of a creative process. 

Cognition - Thinking

"Quite simply, cognition refers to thinking. There are the obvious applications of conscious reasoning—doing taxes, playing chess, deconstructing Macbeth—but thought takes many subtler forms, such as interpreting sensory input, guiding physical actions, and empathizing with others. The old metaphor for human cognition was the computer—a logical information-processing machine." Psychology Today

Affect - Feeling

"Affect refers to the emotional interpretation of perceptions, information, or knowledge. It is generally associated with one’s attachment (positive or negative) to people, objects, ideas, etc. and asks the question "How do I feel about this knowledge or information?" Educational Psychology Interactive

Conation - Doing

"Conation is action derived from instinct; purposeful mode of striving, volition. It is a conscious effort to carry out self-determined acts, or get something done. The Latin 'conatus', from which conation is derived, is defined as "any natural tendency, impulse, or directed effort." Kathy Kolbe

"It is closely associated with the concept of volition, defined as the use of will, or the freedom to make choices about what to do (Kane, 1985; Mischel, 1996). It is absolutely critical if an individual is to successfully engage in self-direction and self-regulation."  Educational Psychology Interactive