As an attendee, you do the best you can to discipline yourself to sleep at some point.

Source: https://www.wortfm.org/womex-2023-world-music-on-display-in-galicia-spain/

“I can only use the example that my mother always taught me ‘even if it is $50.00, discipline yourself to set that $50.00 aside, there is no reason why you should spend your entire salary,” he explained.

Source: https://antiguaobserver.com/social-security-director-joins-sagicor-panel-encouraging-workers-to-do-more-to-prepare-for-retirement/

“My best advice is to discipline yourself if you want to achieve anything.”

Source: https://southwarknews.co.uk/news/dulwich-man-who-shed-four-stone-in-eight-months-is-now-an-extreme-runner/

You have to discipline yourself about the subject, and you need to be dedicated to the study it.

Source: https://punchng.com/abstract-teaching-scares-students-away-from-maths-mathematics-scientist/