What do you tell yourself in moments of weakness (fasting, workout, girls, etc)

Mainly thinking about fasting here (I keep IF pretty well until the last hours where my willpower wavers).

What do you guys do to keep your willpower strong in moments of weakness? Fasting/Cutting BF is one of my main plataeus I struggle with, I sit at a solid 15% BF but I genetically store my fat on my face.