How many of our postings have you read? Did you pick and choose arbitrarily or read an entire thread through? The reason I ask is that there are MANY people on this board working to make changes within themselves; if you read entire threads through to the end you'd see that several people talk about making change in themselves. Sometimes there is the added benefit that a change also occurs within our spouses, sometimes not...but I do believe that the majority of the people on here do recognize that change has to begin with them (not their spouse).
I won't say that some of the people on here don't simply come here from time-to-time to vent, we all do that, we're human and need to get the frustration out.