I've had jobs that required much know-how and experience to perform well, and I can confidently say I excelled in the field. Never have I feared doing something - not until I gave birth. I feared taking care of another life aside from mine.
Due to its demanding nature, a mother has to do more than enough to enjoy performing the tasks. That's where creativity comes in. Mothers find ways to create a conducive environment fit for every member of the family. It's definitely not a no brainer.