+1 on the "get some lessons" suggestion. I ski at whatever pace I find comfortable, and if that little voice in my head pipes up and says that I'm Going Kind Of Fast, Eh? I listen to it and scrub some speed right away. If it were strictly up to me (no clocks, no apps, no company) I'd say that I ski the same speed I always have...which is at my comfortable pace. However, clocks, apps, and Mr. Serafina assure me that every time I take a lesson, I wind up adding a good number of mph to my speed - it's just that my skills have ramped up, and that faster pace is now my New Comfortable pace. Last year, my "comfortable" pace clocked in at 35mph, so we're not talking going from poky to slightly less poky, it's some real speed. But it doesn't feel fast.
Also, my comfortable pace depends heavily on conditions. I'm comfortable going a lot faster on slopes when the light and visibility are good, when the snow surface is firm and predictable, when the runs aren't crowded, and when I'm feeling fresh. If there's swirling precip, or anything coating my goggles, or light that is flatter than a pancake, or piles of slow soft stuff scattered about on sheets of ice, or lots of other people, or I'm sharing the run with people who either aren't tuned into their surroundings or aren't skilled skiers, or it's the end of my ski day, that comfortable pace is going to be anything from 10 to 20 mph slower.