380->340 over 6 months. I was off for 6 months and maintained 340 with diet changes and exercise. You cannot go back to the old diet and expect to maintain. I'm back on now to lose some more.

Some other things I've learned:

Take the first shot on an empty stomach. Expect the first 3 days to be rough. Hunger is more than one sensation, and when you have severe calorie deficit, your body will feel very bad (at least at first).

It is critical to control your food environment - don't bring junk food home, don't go to restaurants too often.

I learned to slow down and enjoy the food reward, instead of trying to chase it. No words will tell you how to do this for yourself.

There is a feeling that I call "future hunger", where I don't feel bad, but I feel like I will in a while. In the past, my body and mind would get frantic when I felt this way. Now I have a very small snack and ask myself "do you feel bad right now, or do you feel like you're going to feel bad". Again, these words may not translate.

More than one serving of salty and sugary snacks should NEVER be within arms reach, and preferably not in the same room. Your mind will remember these snacks and oftentimes eat them without conscious effort.