Plantar Fasciitis can be very painful and debilitating. Look at what happened with Justin Thomas's caddie, Jimmy Johnson. He injured his foot in October. He needed to take the last 4 weeks off to rest and rehabilitate his foot. Treatment will depend on the severity of your plantar fasciitis. If the pain is sever you may need to use a walking boot for 3-4 weeks. Night time splints that you wear while sleeping are often used in these cases. Some Doctors recommend a series of cortisone injections and in extreme cases (usually chronic cases) where your plantar fascia is torn you may require surgery.
If your symptoms have just started, stretching is the best thing you can do. Stretching your calf muscles and arch will help significantly. Proper footwear is also important. IF you have flat feet you may want to consider arch supports. Avoid walking barefoot or using shoes with little to no support such as flip flops. Ice and massage can also help. I usually recommend that my patients freeze a water bottle and roll it with their foot to accomplish both massage and icing simultaneously. You can also use a lacrosse ball to massage your arch.
Physical Therapy should help resolve the pain and restore your function
If you have any specific questions please feel free to email me at rich@grecopt.com