It all depends on what shard you are playing, if on siege then stealing will raise fairly fast up till 70 the RoT will kick in, if you have lots and lots of gold you may be able to buy loads of scrolls of Aclarity, (if thats what there called) these give a certain number of skill points automatically and you can get them that will give you enhanced gains for a set amount of time, other than that make sure you are stealing things in the right weight/skill ratio and it shouldn't be too bad, just make sure your stealing alot!