1 Kings 6:12-13. Do nothing which would keep you from entering the temple.
President Monson:
“Those who understand the eternal blessings which come from the temple know that no sacrifice is too great, no price too heavy, no struggle too difficult in order to receive those blessings. . . . Now my young friends, who are in your teenage years, always have the temple in your sights. Do nothing which would keep you from entering its doors, and partaking of the sacred and eternal blessings there.
“Your sacrifice may be bringing your life into compliance with what is required to receive a recommend, perhaps by forsaking long-held habits which disqualify you” (“The Holy Temple—a Beacon to the World,” Ensign, May 2011, 92–93).