I have 'Katamari Damacy', and love it, except I have an extremely hard time controlling the rolling ball. It always feels awkward to me, and when I settle into playing, my thumbs quickly begin to ache from all of the strain that results in rolling-ball-direction-frustration. I'll openly admit that I tend to think that I have to move both sticks in the direction I wish to go, to perform that action. Can you offer any tips?

Also, when playing Katamari, the higher levels, I feel like in order to pass the level, I have to memorize the locations of objects in order of size and to win, to zip from one site to another like an alphabetical shopping-spree. Can you offer any advice or tips there? Am I doing it wrong?