The focus on physical conditioning and equipment preparation is crucial, but it's not the be-all and end-all. Mental preparation is just as important, if not more so. In my experience, a cool head can make all the difference when things go south. Sure, building physical resilience is important, but having a plan and being mentally prepared for the unexpected can minimize the severity of crashes and injuries.
All too often, I see cyclists who are physically fit but lack the mental fortitude to handle high-pressure situations. They're great on the flat, but when the going gets tough, they fall apart. It's not enough to react to situations as they unfold; you need to plan for them and be ready to execute that plan when the time comes.
Don't get me wrong, physical resilience is important, but it's only one piece of the puzzle. If you want to be a successful cyclist, you need to invest time and resources into developing your mental game as well.