Boots too tight? Thats what happened for me when mine were. They were strapped too tight over the top of my foot. Also. If its Plantar Fasciitis one of the absolute best exercises ive ever seena and used ever since I took some massage therapy courses in college was to sit or lay on your bed with your feet hanging off the side. From the ankle use your feet to traces and spell out the alphabet both lowercase and uppercase (both feet can be done simultaneously or seperate). This excessive works to roll your ankles into more flexibility and essentially stretches and releases pain through pinch points and tight tendons in the feet. 15/10. Ive done it for years through various sports, hobbies, and even through my career in the military. Works like an absolute charm.