When do you know that your quiver is full?

In the Bible, not sure which passage because I'm lame, it talks about having a quiver...the family you are to have under God. Every one's quiver is a different size...some with kids, some without. How do I know how many kids are supposed to be in my quiver? Why is the transition to two kids from one so difficult to make? I feel like Carrie Bradshaw off of "Sex in the City." Instead of posting info about an outrageous sex life, I'm talking about boogers, poop patterns, and when to have another child. Is there something wrong with me that I don't have that, "I can't wait to have another," feeling. Motherhood has been more trying than anything I've ever accomplished in my life. My husband and I took a trip to Mexico before the Swine Flu outbreak, and it was the most amazing week I've had in a long time. No responsibility, just me and my Zune on the beach and by the pool. It was a week of being my old self. On one of the talk shows recently, they discussed the whole "Mom" thing. They said that after having kids, you can never return to who you were before having kids, but you have to reinvent yourself. This is so true. The hard part is finding your identity once you have a kid. Getting past just being Hank's Mom, as if that shouldn't be enough. However, you are constantly asking yourself, "Where did I go?" Being a Mom should be the definition of sacrifice. Don't get me wrong, I love my son and being his mother, but can I do this all again...advice would be great! Happy Blogging!