Try to think of working out and healthy eating as a lifestyle. Rather than go on a diet or try a crazy exercise routine, try making them something you do every day.
Pride may be allowed to this or that degree, else a man cannot keep up dignity. In gluttony there must be eating, in drunkenness there must be drinking; 'tis not the eating, and 'tis not the drinking that must be blamed, but the excess. So in pride.