In this e-book, each of the articles describes results and/or concepts driving current research studies on sustainable, intentional change. Life is change and we adapt to survive or we change to strive, often towards higher social motives or building caring relationships. These changes can be called "intentional." Some are conscious and others are not (i.e., autonomic). But they are intentional, and as such are desired and purposeful. In accidental or imposed changes, we decide how will respond and in this sense, our response to the imposed or accidental change is also intentional. Hardly a day goes by when we do not have to deal with intentional change or its consequences at every level of our existence. The articles in this e-book examine how we can use complexity theory and its component concepts to understand desired change and build a model or theory of intentional change. They look at change at many levels of human, social organization, from the individual to dyads (in coaching) to teams to organizations to countries.