Inclusion Criteria:  Being over 18 years old Being literate Not having communication difficulties (Sensory losses such as vision and hearing) Volunteering to participate in the research. Not having a psychiatric diagnosis by a specialist physician Being open to communication and cooperation Being admitted to the coronary intensive care unit due to Acute Coronary Syndrome and Myocardial Infarction  Exclusion Criteria:  Having a diagnosed delirium Receiving ventilator support Using sleeping pills Having a diagnosis of dementia Insomnia/propensity to sleep as a side effect of the medication used.