How do you get rid of a spur on the bottom of your foot?

Question

its a knot underneath my skin on the bottom of my foot like its on my bone at the arch of my foot

Answer 1

The key for the proper treatment of heel spurs is determining what is causing the excessive stretching of the plantar fascia. When the cause is over-pronation (flat feet), an orthotic with rearfoot posting and longitudinal arch support is an effective device to reduce the over-pronation, and allow the condition to heal.

Other common treatments include stretching exercises, losing weight, wearing shoes that have a cushioned heel that absorbs shock, and elevating the heel with the use of a heel cradle, heel cup, or orthotic. Heel cradles and heel cups provide extra comfort and cushion to the heel, and reduce the amount of shock and shear forces experienced from everyday activities.

If the problem persists, consult your foot doctor.

Answer 2

You don't the doctor does.  Go see one.