Asa conducted himself well before God, reviving the ways of his ancestor David. He cleaned house: He got rid of the sacred prostitutes and threw out all the idols his predecessors had made. Asa spared nothing and no one; he went so far as to remove Queen Maacah from her position because she had built a shockingly obscene memorial to the whore goddess Asherah. Asa tore it down and burned it up in the Kidron Valley. 1 Kings 15:11-13 (MSG)
There is something about "cleaning house" that brings a fresh start. Cleaning house means purging old and worthless things that take up room, demand time attention and distract me from more important things. I might "rearrange house" so that there is a sense that things are fresh and new, but it is not the same thing as cleaning house. The old and worthless things are still there. They may be tucked away for the moment, out of sight, so I can fool myself to believing that things are clean. But, nothing has really changed.
"Cleaning house" requires uncomfortable decisions. I'm sure Asa's decision to remove grandma from power had tremendous ramifications in his life, his household, in his family, and in his community. She had been holding "position" within the family, the royal household, and therefore, the government, for multiple generations. The removal of something or someone that holds an old, secure position within any kind of system tends to throw that system into conflict and confusion for a while. That's why we avoid it.
"Cleaning house" is a requisite part of the process for anyone who wants to follow Jesus. You don't get far in the journey if you keep accumulating and never purge. A journey requires mobility and you can't move if you're loaded down. "Old things pass away, new things come," God's message tells us. But, there's no room for new things in our backpack if it's still full of our old stuff.