Magnificent Obsession (1954)

When churlish, spoiled rich man Bob Merrick foolishly wrecks his speedboat, the rescue team resuscitates him with equipment therefore unavailable to aid a local hero, Dr. Wayne Phillips, who dies as a result. Phillips had helped many people, and when Merrick learns of the doctor's way of life-- That is, to selflessly give of himself and his finances, in secret-- Bob attempts it in a ham-handed way. From then on, the lives of Helen Phillips and Bob Merrick intersect, first in tragedy, then in love.