Critical thinking is a nursing process that includes reflective practice, problem solving and decision making, which are linked to each other. The definition of critical thinking is transferring and applying knowledge and skills in a new situation. Critical thinking is necessary in many aspects of nurses' work, such as when nurses must provide precise identification of specific problems experienced by patients. They must be detailed and also critical of themselves at all times in order to provide accurate identification. When you are in the nursing profession, it is important to be a critical thinker. Nurses have high responsibilities and their responsibilities increase from time to time. The increase in responsibilities affects the additional educational prerequisites and also the fundamental requirements that must be achieved to obtain the nursing degree. The standard has been established and critical thinking in the nursing process becomes two things that will support each other in the nursing standard and nurses will have to become critical thinkers. Nurses will learn about critical thinking through application and also experiment because experience is always the best teacher in any profession. But first, nurses will have to know the correct decision and it must be ensured that the correct decision is taught in institutions. In this requirement, new nurses will take an orientation time that will allow them to learn more about the procedures, documentation and even policies of the institution they will be working for. These new nurses will have a highly experienced mentor and will evaluate the details of the new nurses' work. Anyway... half of the paper... patient in the radiology department. X-rays revealed that the patient developed internal bleeding. They immediately decided on an operation to at least control the bleeding. At the end of the operation the patient was transferred to intensive care. One month after the operation, the patient was discharged from the hospital but is unable to walk. Increased intracranial pressure, poor communication and critical thinking lead the patient to this unfortunate situation. In most cases, the life-threatening decision rests with the nurses. We get asked a lot. We must always act and think fast because every single minute counts. Every decision we make could save or waste a life. We must therefore remain focused and committed to our patients. We care for them with passion not only because we are committed to our profession, but, above all, we have the heart of a nurse.