Right after Christmas, we completely paid off all our cards (like we always do, usually twice a month), and immediately started the spending freeze. We've hardly spent any money since, so my credit utilization is down to about 1%. 1-9% is considered "excellent." As a result, my scores are up 27 points (TransUnion) and 19 points (Equifax) since the last time I checked!
I can't do much about some of the other factors. Age of credit history is probably what I need most, and that takes time, obviously. But I am excited to see that my credit is steadily improving, and it's awesome to sometimes be able to do specific things to improve it instead of guessing like we used to. Seeing that the spending freeze has helped it, even in the short term, brightened my day and gives me motivation to press on through the end of the month!