Wait, you can change the difficulty virtually on the fly, at the character title screen select your quest and then also the difficulty (I'd suggest Normal(Medium)).
No need to start over.
Edited by shamblemonkee at 11:52:48 11-09-2013
#9835183, By shamblemonkee Diablo 3
shamblemonkee 14,938 posts
Seen 51 minutes ago
Registered 10 years ago