How is self-esteem defined or measured? The psychologists who conducted this study correlated adult self-esteem with being good at what we do—mastering a set of skills, many of which are related to the work we do. The arrival of a baby gives us a whole new, arguably more important, job: parenting. And parenting, no matter how much we read up or prepare ourselves for it, is chaotic, trial-by-fire-type work.