The last time I had a hard time learning something was when I was trying to learn how to play the bass guitar. It took me a long time to be able to learn cards and frets. Even after I learned all of them I got confused with the cards when I was playing extremely fast. So my brother R.J. found a way to fix that problem. He fixed it by buying me a fretless bass. The only problem with a fretless bass guitar is when you play a song once, the second time rarely sounds like the first, but close. The reason for that is because frets show were your finger go. Without them your fingers are free to move along the cards. So your fingers hit the same place with frets, and without them you get within a close area of where your first rift began.