I am also bad about changing blades but am trying to be better about it. I don't change at the start of each new project like some recommend because not all projects involve the same amount of cutting. And it seems that within seconds of changing a blade it starts skipping. I have invested in an electric blade sharpener but haven't used it yet - need to try it.
The one time I do change blades religiously is before I go to classes at Houston Quilt Festival and I even carry a spare blade. One year I kept the same blade the entire year in between but that was the year I fell and broke my arm, had to have surgery, and then several months of therapy. I used my AccuQuilt Go a lot that year.