First off - congratulations on what you have accomplished!
I saw a comic once that said - eat less and do more. With eating less - keeping an honest food journal (like on this website) helps to keep perspective. If I haven't been losing weight, but see that I've been eating 1,800 - 2,500 calories a day - I get it. Also, with activity - try to add a new activity - biking, yard work, etc.
Good luck! I'm in a similar situation and wish you well.