A zero challenge number means only that, numerologically speaking, no challenges of a specific number vibration were in place when you were born.

That's it.

Ideas or suggestions that such is good or bad or that you must now choose challenges are only opinions. There is no innate requirement to have challenges.

True, challenges are good for personal growth. True, all-zero challenges make it wide open, leaving it up to you.

It appears you did indeed create or accept a challenge, a challenge of requiring yourself to make a choice to move forward spiritually, yet unaware of what the choice is, and even perceiving the requirement to be crucial.

Well done. A nice challenge. Perhaps more problematic than a clear-cut challenge, but a challenge nevertheless.

Here is the thing: The challenge you describe is only a challenge so long as you perceive it to be so. You have the option to at any time drop it or replace it with a different challenge. Not saying it is a non-optimum challenge because there are none such unless you perceived them to be non-optimum.

The best challenge is your own (not one you're supposed to have according to others' opinions or one you feel obligated to have), a challenge accepted by your own self-determination, and a challenge that makes you feel alive when you contemplate the satisfaction of having met it.

What do you want to attain or obtain that you don't yet have? Not the shoulds or musts that others insist you accept. But you, personally.

If you already have everything you want, you are in a position most people desire.

Your chart tells me you are a powerful person. Creative (vowels number and pinnacle number 3). A leader (name number 1). And compassionate (birth date number 9).

There is nothing wrong with you.

Insist any challenges you accept are fully your own self-determined choice rather than challenges others opine you should have.