This study on 138 undergraduate students used path analysis to investigate the relationship between creativity (interest, measured by a creative activities survey; and ability: fluency, originality, and elaboration) and different aspects of thought patterns presumed to influence the preparation and illumination phase of the creative process: habitual patterns of thought (ruminative brooding, ruminative self-reflection), thought suppression, thought intrusion, mind wandering, and associative ability. Such relationship was hinted at in Wallas's classical model of the creative sequence, but is rarely investigated. We found that creative behavior/interest was driven by self-reflection, thought intrusion, and the lack of a need for thought suppression; creative ability was fueled mainly by associative ability. The only variable that influenced both aspects of creativity was the lack of resistance to thought suppression; this distinguished the creativity variables from dysphoria, which was associated with a desire for thought suppression. The results suggest that what drives the need to create is not creative ability per se, but rather self-focused attention, as well as the feeling or experience of being found by thought, rather than finding it. That is, the need to create is associated with having thoughts that interrupt one's ordinary stream of consciousness and that are seen as welcome rather than interfering.