Learning to do the right thing? Man is THAT hard to do.
Learning to play the trumpet for example: when I learned to play; I did not just pick it up and immediately start playing. I had to learn the right way of holding it, buzzing my lips, positioning my hands, what the fingering is, how to breath, how to hold my breath, how to play 16 to 24 beats without breathing or inhaling.
Learning the right way is hard, but later you will be Glad you did; later it looks so easy.