I think part of that comes from the intention to sell. Many of us started out with just a hobby and ended up selling. I was making soap over a year or so before I ever thought of selling it. Same with my other products. I tested everything for at least a year, just making for friends and family. When I finally decided to sell, I added things a little at a time. I work full time plus have a family, so having a business took time. Over the last 7 years, I've had my products out there and will still sometimes tweak them. But I wanted to have products I knew were quality so that customers came back. I think it's the same with candles (I don't make them). There are just so many variables to them. Takes a lot of time to find the right wax, jars, wicks, scents etc.... I read every post on several different forums related to what I wanted to do.
So, just enjoy the process and have fun. Don't stress out or you're likely to quit before you even get started. Also, keep in mind the markets are over populated with B&B as well as candles so you need to find your niche.
Take a deep breath.