The 3 most common habits that one needs to change (including myself) are-
1. Always, keep your place neat and tidy. No matter how much late you are getting or what important work you have, just make sure that your place is cleaned up properly.
2. Stay Hydrated. Install the apps that keep reminding you to drink water or set up alarm reminders to stay hydrated (Especially in Summers).
3. Plan out your day. Try to organize your day by planning it.