Smokers can quit nicotine entirely, that is, quit smoking and not use any other type of nicotine. They can also get nicotine from a much less harmful source. Neither one will immediately eliminate all of the health risks caused by their previous smoking, but both come very close.
uncountable noun. Self-respect is a feeling of confidence and pride in your own ability and worth. They have lost not only their jobs, but their homes, their self-respect and even their reason for living. Synonyms: pride, dignity, self-esteem, morale More Synonyms of self-respect.
Self discipline means that when you have something to do, you do it, regardless of whether you like it or not. Often this will mean having to overcome your natural urge to do what is fun, easy and quick, and being able to do the things which are hard and necessary instead.