This paper argues that organizations should adopt Mattering Theory constructs into mental models, as a basis for employee motivation and individual development plans.Mattering as a mental model motivates employees through direct attention and conveyed importance. Mattering constructs become tangible in the use of an individual development plan (IDP). With employee input, the IDP fosters employee internal commitment, followed by manager feedback and follow through, which fosters externalcommitment. Both stem from intentional discourse, mental models and behavior that is rooted in mattering. If successfully implemented, the end result is a simple, practical approach, which brings value and motivation to the individual, and supports the principles and goals of the organization.