It takes massive amounts of time, and I'm still just an amateour. It took me years to get to this level, and there is loads I have to learn before I even begin to scrape the bottom of prodom.
I had an amazing teacher,
, who has died last year, a great loss for me and the 3D community here on DevArt. He showed me not just the basics, but the "philosophy" behind the thing.
I also chewed through a 20 hours long tutorial video to make the Serenity from Firefly. That also taught me many tricks I am using.
But, like I said, I am far, far away from being a pro. I'm an enthusiastic amateour.