And you will also realize that this is an unachievable goal. The kind of existence you require to attain that type of ease and thinking will alienate you from the vast majority of human behavior and thought.
* to give you one random example coming to mind - the journalist in Mexico who got killed by murderers from a drug cartel past week knew very well what was at stake and chose to keep doing his job - so I'd argue he managed to come to terms with having to die. it's an extreme example but reaching this mental state is likely easier in less extreme life circumstances - those most of us are impacted by.