So I'm at level 36 right now in the Fields of Ruin area, and I'm stuck. I've done all the hearts here that I can do, even did a 38 heart. There are only 2 hearts left here and those are levels 39 & 40, so they're hard for me. My next story quest recommends level 39 so I can't do that yet.. Any suggestions as to where I can go to level?? Getting frustrated at the game..
Going to lower areas levels you down, but you get relatively similar loot and xp to your level. Also, explore the world more, rewards for map completion are sweet. Not to mention it's fun trying to get all the vistas.