In the United States, we have a problem where a certain individual continues to flout long-held common convention, safeguards against autocratization, and even several very old and cherished laws that don't have effective means of enforcement or punishments attached. Many people argue that to codify the conventions or provide enforcement/penalties to the laws would excessively limit the position's ability to function effectively.
Are there any countries that have managed to bolster their long-held convention, democratic safeguards, and/or constitutional laws that do not excessively burden the ability of the executive to continue its normal tasks and do not contribute to autocratization or destruction of the rule of law? And how did they do it?