I've worked a few odd jobs during my travels, and they all helped me with my training. You should take up a part-time job during your World Tour, as well.
Something in the way while you're walking through the city? Here's an easy solution: send it flyin' with a Master Action! Mm-mm-mmm... It's the little pleasures in life.
Where's your face, dingus? Get your butt to the avatar creator and sort yourself out! Crying shame we can't fix that attitude of yours while we're at it.
You've heard of combo trials, I presume? It's time you practice attack sequences. I want you to finish 45 of them. It will be difficult, but I've the utmost faith in you.