People don't change because they can't, don't want to, don't know how, or d
on't know what to change. The transtheoretical model provides an integrativ
e model for understanding reasons for not changing, as wed as readiness to
change. Stages and levels of change guide therapists in their work in helpi
ng clients change. Clients in the precontemplative stage typically cannot c
hange without special help. Those in the contemplation stage are not sure t
hey want to change. Those in the preparation stage are afraid they do not k
now how to successfully change. The levels of change help guide therapists
and clients on what to change.