One possibility is to assume that there is “one way.”

In this case, your work is about searching for the person who will share what that “one way” is.

Another possibility is to settle with discovering how you are defining that “one way.”

There is no difference between both.

Apart from your assumption as to who is supposed to define that “one way.”

Once you’ve defined the “one way” that is right for you, you’ll realize that it is the one you’ve chosen.