Sometimes I sleep late because parties and special issues during the night. How can I keep the morning routine good after these events?

Anatole Y.
Take the first five minutes of waking up to become as fresh feeling as possible by hopping out of bed quick, drinking water, splashing cold water on your face. If you’re getting short nights of sleep, try to find a time in your day for a 30-90 minute nap.

Katharine J.
You can try to have a similar morning routine that you usually do except take time to adjust to these late nights. If you have this option you can pick and choose what habits you want to and can do everyday even when you stay up late.