Some people DO have a natural talent for drawing, but it's a skill that anybody can learn with perseverance. And like anything else in life, the more you practice the better you get. I've taken art classes and worked on my drawing ability - I still kind of suck at it but that's mostly because I don't practice like I should. If I really work at it (and do a LOT of erasing) I can draw "ok". My art teacher told us that if you want to get good at it, you need to invest about 10,000 drawings into it. He recommended keeping a sketchbook nearby and doing at least 2 drawings per day, every single day.
I don't draw nearly that much but I do doodle, which I think helps but not as much as a focused drawing would. Of course these days most of what I'm doodling is quilt designs, LOL.