For myself, I notice two factors if I can’t stick with my planned fast, the mental and the physical. Am I fasting from a place of care for myself & curiosity? Or am i using the fast against myself — my personal brand of negative self talk looks like using fasting as something I should do to be more acceptable to myself/approve of myself, instead of trying to love and know I’m worthy of love and my own approval unconditionally, and then fasting because I want to. A few days of journaling, self care, and meditation is usually the fix. On the physical side — was I too high carb/eating sugar immediately before the fast? It’s a big factor for me for how easy the first few days are. And do I have enough space/social support for the level of difficulty for this fast? I know you can technically fast amid anything, but it’s a lot easier if you don’t need to make your favorite dinner & serve it to your kids on the afternoon of day two. We’re only human and admitting what level of support/isolation we might need to accomplish the goal is how we care for ourselves (goes right back to the mental of not using a fast against yourself !)