The familiarity of what you know might be the thing that keeps you from exploring other ideas or options.
Let’s take the example of food.
Imagine you go to a restaurant and order the duck. Now imagine the duck is incredibly delicious and so each time you go back, you order the same thing.
You find yourself sticking with what you know because you know you’ll like it. But there are many other options available to you that are worth exploring. It’s not that you’ll like them more but instead a reminder of the important of taking advantage of what is available. I think sometimes in life we take our options for granted.
As much as there are so many other options available for you to experience, you turn them down because you’d rather play it safe with wat you know than venture out into the unknown.
But what you end up forgetting is that the very thing you’re clinging to because of familiarity was also once unfamiliar, you just got used to it over time.