I think I did my best - we were married when I was 19, after DD was born. (That is a story I've told before!) None of it, obviously, planned! I was an only child, and knew nothing about babies. But I learned fast, and, as you do, got on with it. By the time my second son was born, I felt like an old hand.
I do think that, being so young, I had lots of energy and determination, and remember running around with them in the parks, and learning to feed them on very little money.
I went back to university when DS2 was 3, and carried on studying and working from then on. My experience as a parent certainly fed into my teaching!
They have all three turned out to be lovely, intelligent, compassionate people, so maybe I got something right. And they are loving children too. AND they have the most glorious children, of course! Six of them...