I remember my college professor once said that don't just aim to be a good teacher rather aim to be an excellent one for everybody can be good.
Teaching is a very demanding job unlike being working in the office where you can leave your unfinished work for tomorrow, teaching requires you to prepare everyday for your next lesson.
Thus, teaching is a noble job for you can't be successful in this career if your heart is not dedicated in your students.
I'm proud in my profession because education if use in a right manner will surely bring you success.