It took me over ten years to learn how to knit. Ten! And I'm not the dullest crayon in the box, but whenever a friend or my poor mother (I'm so sorry mom) tried to teach me, watching their needles and yarn twist and loop into fabric made my head spin.
But after ten years (and countless tangles), I figured out where I went wrong and have knit scarves and wraps for my friends, as well as over fifty ornaments for my Christmas tree. So if you're trying to learn and find yourself with more dropped stitches than pretty purl rows, it might be time to try something new.
To paraphrase George Constanza, it's not you, it's your knitting.