I can only recommend going through the Bitterstone Core Dungeon or doing lots of PvP. PvP is fun, and usually before you know it, you reach the next level. Bust some heads in Caergate or battlegrounds; also battlegrounds give nice EXP rewards as well.
A good way to level is to set your goal as something that is NOT leveling, but gives you exp all the same. It's a good mentality thing. You get exp that you don't notice getting; but if you focus your goal on leveling, it will feel monotonous, boring. That's what I did; just pvp all day and concentrate on KEEEL KEEEL KEEEL and I was surprised when I leveled up.
That blue glow thing distracted me and got me killed though.