Biological imperative.
After that, it was that my child was so ace I wanted more amazing people like him
in my life, so we ended up with three.
A good mum surely wouldn't be doubting if they can be a good mum?
Quite the opposite in my experience, OP.
The ones who bulldozed their way through without self reflection or thought weren’t nearly as good as those who thought about whether they were doing it ok, and engaged in it.
I had no idea whether I’d be a good mum. I wanted to be, and I have tried my best. I have made a LOT of mistakes and done loads wrong. But I’ve also done loads right, and I’ve stepped back to think about what we’re doing and why, changed course when we were getting it wrong.
Mine are young adults now, and I can honestly say I am in awe of the interesting, remarkable and lovely people they have grown up to be.
I wish you as much joy in your child as mine have brought me.