Guild Wars 2

So, I am fairly new to MMOs. This being my first one, and I have played it since beta. I have only played one character and that is my aura thief.
95% of the time I am doing solo PVE and I was wondering what everyone thought the best profession for solo PVE is.
I feel like with my D/D thief I die too quickly if I have more than 2 or so enemies attacking.
Any suggestions?

Thanks

Warrior, guardian, necromancer, and ranger.
Warriors have high health, high attack, tons of ways to stay alive.
Guardians can pump out tons of buffs and heals, having low health isn’t really a problem.
Necromancers are the tankiest casters, they also have death shroud and minions to further increase their survivability.
Rangers might not be as tanky, they have pets that can tank for them, then they can safely eliminate mobs at a distance.

This is exactly what I was looking for.
Thank you