Sometimes more intense efforts have to be made to be spiritually effective in a given situation. Fasting can be one of the means. It doesn’t mean that’s the right thing in every single situation. Also, it’s perhaps an ill noted spiritual truth that demons are driven away with light. By exalting God in their faces. It does not work to try to curse a demon to hell. It’s already damned. It’s superfluous at best, and gives the demon a foothold over you at the worst.
I feel particularly distressed by the local Planned Parenthood. They are literally one block from my house, on the same street. I go past there, on foot or by car, almost every day of my life. I’ve been praying, but I think I should also be fasting.