It is usually said that before any significant Magick operation doing some form of divination is crucial to see possible outcomes and device the right strategy. I’ve done this before every important ritual and if my cards indicate a low success probability I step back from the ritual, at least until conditions are good.
What if you do your divination, it says the ritual might not be successful but proceed anyway? Has anyone done that, and if yes what happened? Did you get your results anyway?
I wouldn’t call it "crucial’ but it’s a good idea.
Mostly to save time and effort, as it’s quicker to do a divination than find out it’s backfiring or failing days or weeks later. and then have to do it again after dealing with an issue.
It’s your time and your money, if you want to gamble that’s entitely up to you.
I think you want to ask better questions in your divination. Instead of asking IF it will work, ask what protections are in place, and WHY it wouldn’t be as impactful as desired. Ask if there is anything in the way and if so, what is it.
Then deal with the issues. If there are none, the only time you lost was on the divination itself. Maybe an hour?
Yes and I continued the divination to find out the problem first. I have changed my strategy for the work on multiple occasions based on divination, as the one I had planned was not the right tool for the job I wanted done.
For example, if a neighbor abuses his dog, and I want that to stop, what is the best approach? A binding? Or a healing or a curse? This is if you get specific like I do… some people may only give the outcome to an entity, and the entity can figure all this out instead.
A common example is that the blocked is within you the practitioner. So no amount of work will get it done externally unless you fix your own inner conflicts and reservations.