This single-blind clinical study aims to determine the effect of adaptation-based educational program on heart failure patients' quality of life. Research subjects will be selected using purposive sampling technique based on inclusion criteria. They will be divided blocked randomly into two groups. Inclusion criteria include: diagnosis of class I, II, III heart failure by a physician, according to the American Heart Association and clinical and laboratory evidence, at least 6 months before the study; ejection fraction of 40% or below; no mental disorder; normal hearing, vision and mental capabilities that allow making communication; age range from 18 to 65 years; no contraction of other chronic diseases such as kidney or liver failure, chronic pulmonary obstructive diseases, neural and motor disorders, except diabetes; having access to patients for follow-up controls; walking capability; and not receiving the same training in other centers. Exclusion criteria include: unwillingness to participate for any reason; moving from the research region during the study; and more than two times absence from training sessions. In this study, 38 cardiac patients will receive group training intervention based on the Roy's Adaptation Model for one month And since the beginning of the intervention period up to one month after a group training, individual training on the telephone and physically will receive based maladaptive behaviors; in addition, another 38 patients will receive routine training. One month after the intervention, the quality of life of both groups will be measured based on the Roy's inventory and Minnesota's questionnaire.