Get back to not thinking about your feet.
There are many causes of foot pain, but if you are experiencing a sharp, stabbing pain that feels better when you stop walking and massage your foot, you may have what's known as Morton's Neuroma. While it has a scary sounding name, this condition is benign and fortunately highly treatable.
In basic terms, a Neuroma is an enlargement or thickening of a nerve in the foot in the area between the toes, usually the third interspace between the third and fourth toes, followed by the second interspace between the second and third toes. Morton's Neuroma can rarely affect the fourth and first interspaces.
It is also sometimes referred to as an intermetatarsal Neuroma, interdigital Neuroma, Morton's metatarsalgia (pain in the metatarsal area), perineural fibrosis (scar tissue around a nerve) or entrapment neuropathy (abnormal nerve due to compression).