Focus on what you can control. Death can be a frightening thing to think about (mainly) because death shows the limits of human life and things human beings can imagine. therefore, learn to focus on what you can control while still accepting things that may be out of your control.
For example, you may be afraid of dying from a heart attack. there are certain factors related to heart disease that are beyond your control, such as family, ethnic or racial, and family history. If you think about these things, you will be more anxious. rather than thinking about these things, it would be better if you focus on things you can control, such as following a healthy lifestyle by not smoking, exercising regularly, and eating healthy foods. in fact, the risk of having a higher heart attack is caused by an unhealthy lifestyle than just the previously mentioned factors