Take the spell above. I created it because I have a contract to sign this week. It's a big contract, important to my future, and I want it to be a positive force in my life. Combining documents, commitment, and success (Letter, Ring, Sun) seemed like a way to keep it simple and express exactly what I am working towards.
Keeping it simple is actually another part of what I want for this contract. Not always easy when lawyers get involved!
And yet, despite its simplicity, or perhaps because of it, this spell can be used for so many situations: buying a home (you could add in the House); signing a new work contract (add the Anchor, or your preferred work card); journaling; tracking a daily commitment like exercise (add the Rider or the Birch Rods); writing a letter of intent; renting a car (add in the Ship); it could even be used by a writer to help them with something like NaNoWriMo, where they commit to writing a certain word count every day!
How about you? Do you have something you want to commit to in writing? A spell like this could help you keep on track or help remind you to negotiate the best possible deal :)