Wipe until you see white (or red).
Change your bed sheets at least once a week, preferably twice.
An electric toothbrush is one of the best low-cost investments you can make for your health.
Be more concerned with ingredients lists than caloric content (Less ingredients generally means better)
Literally do everything you can to avoid physical conflict no matter the circumstances.
A lack of sleep, or sleeping much less than a healthy amount is not something to be proud of and should not be used as a measuring stick for hard work or value.
Have a shoe bin/storage at your front door and never wear shoes you wear outside beyond that point. Your feet will thank you, and you will walk much less dirt into the house.
Meal prep is great, but it can get boring by the 3rd or 4th day of the week. Look into ‘buffet style’ meal prep that you can access when you are a little over what you prepared for the week. It will save you money and increase your chances of eating everything you prepared.
Make sure you eat soluble and insoluble fiber as a focal point of at least 1 of your meals per day, or at the very least your snacks. (This is related to my first point).