For me, position 7 is always self and position 8 is other — or you could say 7 is the inner state and 8 is the outer influence. Another way I look at it is 7 = action, 8 = reaction.
For example, in one reading I had the Empress in 7 and the 4 of Wands reversed in 8. I explained it to the querent as: you’re trying to live your best, authentic life, but the message coming from the world around you is that you’re “throwing everything away” — it was a breakup reading, so that really fit.
Then for me, card 9 shows the repeating pattern. You either listen to 7 and push through, which lets you level up into 10, or you give in to the pressure of 8 and end up looping back to card 1.
That’s just how I tend to read those positions 🙂