I'd say that the success will come from simply being able to keep all of your natural teeth all of your life - what do you think? Is it possible to be 'gummy' and still be a success? And what is a success, anyway?
Clean your teeth after every meal. Exercise the muscles that hold your teeth in place by chewing on something hard after each teeth clean. That's what kept the Eskimos from having a word or description for toothache until they were introduced to Western ways.
Success - If you've got all your teeth a seventy...that's success.