Anyone drinking diet management shakes?

Since there was only high-calorie and greasy food around my office, I decided to have a diet shake for lunch.

At first I was worried that I would be hungry, but the diet shake was more filling than I thought and I was able to last until the afternoon; haha

Actually, I'm worried about how long I can last because I have weak willpower, but the diet shake tastes better than I thought, so I'm going to try to keep eating it for now!

For those of you who eat this kind of food like me, do you have any tips on how to eat it without getting tired of it?

Please share itㅠㅠ