The 7 Principles of Vodun are something someone made up to keep things simple. There are many more than seven, and there is no “one true way” that is good for everyone. Much about what you should do in a given situation depends on your head, your devotional and professional egbe(s), your family including ancestors, and what is customary for your people. There are some universal rules and principles, but outside of these, it varies.
Common Rules and Principles
1. The Ori/one’s Personal Divine Essence is the most relevant Orisha in one’s pantheon.
2. The Egungun/Ancestors is the most relevant Orisha with your Ori.
3. Always run everything to do with spirits or spirituality through your Gatekeeper deity or ancestor. This protects you from intruders and impostors.
4. Don’t pollute your altar. Unless you have an exception (determined by your pantheon/culture) you don’t approach any altar or shrine while you are dirty, ill, or excreting any body fluids uncontrollably.
4a. You do not touch anyone else’s spiritual or ritual items, altar, or shrine without their express permission. If the permission cannot be gained by conventional means, divination must be done, and offerings given for it.
4b. Ritual and ceremonial items should be maintained according to the instructions appropriate to the deity. A neglected altar attracts misfortune.
5. Division is an illusion. Every atom in this Universe is sacred. Every thing or being is sacred. Personhood extends beyond humans and animate creatures.
6. There is no essential difference between good and evil in a general cosmic sense, but there is such a thing as appropriate or inappropriate or sustaining and harmful behavior for humans. It is important to be a person of Iwa Pele or good character.
7. Only those fully initiated into Ifa or an African system based in Africa may have a large Eshu shrine as a feature of their home. Others may have or build a small one. Exceptions are natural shrines left in their place or cases in the diaspora when they have been completely cut off from the African priesthoods and had to make due. Since the internet, no new cases like this exist, but there are still shrines built by those in the diaspora that are still legitimate. However, even a small stone in a bowl is sacred.
8. All bodies of water deserve protection. Do not pollute them. Do not allow others to pollute them when you can prevent it.
9. You must not litter or leave items behind that would harm the environment. Be mindful when leaving offerings to make vessels biodegradable, salvageable, or retrieve them to be cleaned and reused.
10. Be generous and compassionate to all to whom is is safe, especially those less fortunate, children, and the elderly.
11. You are not obligated to be kind to your enemies or allow them to harm you. Being a pushover or passively accepting oppression is literally against our religion. Just be intelligent about it.
There are a few more, but these are the ones I could think of that cover everybody. Even with these, the clarifications or specifics will vary though. If you have any others that you believe should be here, feel free to comment. Also comment on others’ comments to confirm whether or not this is true of your branch of ATR or diaspora practice as well.
Blessings and Ashe!