How can one fix an ingrown toenail without going to the doctor?

Soak the foot in : Warm to hot water so the nail softens and cautiously try and trim the nail away from the skin. My strong advice is to go to the podiatrist as often times when people attempt the above maneuver they invariably cause an infection which compounds the problem. A podiatrist can perform the procedure under local anesthesia and make it a permenant correction.

Have it evaluated.: Ingrown toenails can be temporarily remedied through soaking your foot in warm water, removal of embedded debris from the nail borders, and applying an antibiotic ointment to temporarily soften the corners. If you have redness and drainage, get it looked at by a professional as you may need to have the ingrown nail border removed and you may need antibiotics.