For me, Wrath has been very annoying, in that there are numerous collection quests or quests with limited resources.
This is compounded by having 5 toons for any of the gathering quests.
And further by having so many people competing for the resources.

Your options are to wait until it dies down a bit, which is the route I am taking.
Or to grind a bit, for example on mobs which can be skinned, or towards mining/herbalism nodes, all three of which will make you a ton of gold in the early stages of the expansion.
Instances are an option, but given everyone's relative lack of 70+ gear, without a tank you might be stuck on mobs until the first boss - still it is experience without competition.
You can try a higher zone, 5x the dps, even with resists can let you kill harder stuff.

I don't really like how blizzard designed the quests in Wrath, but if you persevere you will get there.