Well you're supposed to lose money in the blinds and in tourns you lose a lot because they are always on the increase. However limiting those losses is one of the things that can make great players. Defending your BB by shoving over limpers, and other such things can definately help if you find the right situation. You should also be stealing a lot from the SB when folded around and the blinds are high.

I reckon though that a lot of the losses can come HU or when racing in the blinds. When it comes to positional stats what really counts is that you are putting more money in with better position. Check that first. To analyze blind play look at steal/defend stats