Learn enough about your craft that shortcuts become visible before they become tempting.

Shortcuts are attractive precisely when you cannot see what they cost. Deep knowledge of a craft makes the consequences visible early, so the tempting version stops being tempting, since you already know what it will produce. Discipline gets easier as understanding improves.

Learn why the standards in your work exist. Once you can see what skipping a step actually does downstream, resisting it stops requiring willpower and becomes ordinary judgment.