Not a bad concept, but there were a few problems.
I like the whole motivational thing you were aiming at, but the plot of the flash left me pretty confused. I thought you chose the appropriate music that suited the flash. The main character in your flash reminded me of Pico in a way, I got a good laugh out of that.
Some of the animation could be better, like when the main character was jumping up and he didn't have any lege, that left me puzzled. Most of it was serious motion tweening, just try to focus some actual movement and your skills will greatly improve.
You have a decent flash technique already, but if you add some style I'm sure you will get much more recognition for you talents. Some voices woud add to that as well. Keep up the great work!