person A: A few months ago I could barely walk up a flight of stairs without having to catch my breath_comma_ but I bit the bullet and have been training.
person B: how has that been going for you?
person A: Wonderful! It's definitely hard work_comma_ but I continue on_comma_ even on the days I don't want to. Today I discovered I can now comfortably run an uphill mile and I feel very confident!
person B: that's amazing!