Question about shaving?

Have been shaving on and off for over a year now and I was told that whenever you shave it grows back thicker but every time I've shaved it's grown back the same length. I want a devil Goatee (hair on either side of my upper lip but no hair in the middle and a little triangular beard on my lower lip) but I want it to be thick not a half goatee. How can I get my facial hair to grow back thicker? Also, whenever I shave it always leaves a few handfuls of hair