How about “I haven’t changed. I’m the same person I’ve always been. I wish you all the best.”
I do admit I’m a stickler for the last word. So if someone says I’m (whatever) I always say (actually I’m this). I do this until they say, “OK, fine” and don’t make it about me anymore (basically when they stop saying/implying “you”).
Good Luck!
Though I run this site, it is not mine. It's ours. It's not about me. It's about us. Your stories and your wisdom are just as meaningful as mine. 