My doctor had recently weighed me at 258.8 lbs when I got my Apple Watch, and I am now consistently in the 180s. No weight loss regimen I ever tried before buying the Apple Watch ever worked for me. But once I started tracking my workouts and calorie burn and realizing that exercising for 30 minutes can be eaten back and then some in one hamburger, I started dropping weight fast. There was something about the rings and the little encouragements from my Apple Watch that really clicked with me. I have worn it every single day since 2015, and I'm going to box it up and keep it once I upgrade. It has some sentimental value and has been to hell and back with me.
SO....now that I use it for so many more things than when I started (notification triage, messaging, home automation, music, etc.) I'm really itching for a new one. It's a much more important upgrade to me this year than an iPad is.