As there appears to be some confusion here, and as the author of the phrase "make sure you have a co-founder and/or other team members about whom you would say

As there appears to be some confusion here, and as the author of the phrase "make sure you have a co-founder and/or other team members about whom you would say without hesitation "they are so much better at X and Y than I am that I look like a child next to them."" I will reiterate that X and Y are things you feel your co-founder and/or team members are much better at than you, for example "my co-founder is much better at hiring people and writing testable code than I am" or "my first hire was much better at schema design and writing performant queries than I am." X and Y are skills or abilities you respect and acknowledge that others you work with are better at than you, and they are important because remaining aware of other's strengths is how you ward off hubris in yourself as a founder.