It’s hard to say the “best” but there are a couple of good starts.
There are problems doing your own readings when we often allow our own bias to slip in (this is especially likely if you immediately thought this isn’t something you would do) but one area I really like doing readings for yourself is shadow work spreads. I think it’s hard to be that honest with yourself, but even harder to be honest with other people sometimes. And that kind of reading can take some brutal honesty.