I believe robertwiblin et al.'s point is that ceteris paribus working for yourself that features these characteristics will make you happier than working for yo

I believe robertwiblin et al.'s point is that ceteris paribus working for yourself that features these characteristics will make you happier than working for yourself and focusing on other things. In the original article, they clearly identify that some things (e.g. competence) can change over the course of a career. Hence "pre-condition" is a strange way to look at the research.