(Disclaimer: I’m not a therapist, just someone who has dealt with a lot of anxiety and has been through treatment. Please do get professional advice if you’re struggling!)
That’s a great question, and the answer is: it depends! In the abstract, what you’re describing sounds like the opposite of avoiding a feared consequence. With fears, you want to be able to look them right in the face and say: “Yeah. That might happen. I can’t predict the future and I can’t know for sure. But if the worst does happen, I will find a way to accept that reality and adapt to it as best I can.”
(This sounds simple, but if you’re in the habit of avoiding fears, it won’t be easy at first. Your brain will twist itself into a pretzel to work out some way of avoiding the feared thing. This is where therapy is so useful: a professional knows how to guide you through a process of learning better mental/behavioral habits, and they have helped many people before you).
The nuance is intent. It’s healthy coping to open yourself up to the scary uncertainty and possibility that something bad may happen, and to commit to finding a way forward if and when that happens. But it may be avoidance if you’re trying to PROVE to yourself that there’s nothing to fear. It can also be avoidance to identify every possible scenario that might unfold and how you would deal with it - in that case, you’re trying to avoid the uncertainty by mapping it all out. (You can tell that this may be happening because your thinking becomes pretty baroque, and it always seems like there’s just one more scenario that needs to be mapped out and “fixed”.)
Generally, we humans have a hard time tolerating uncertainty. But the truth is, almost everything in life is uncertain to some degree.
There is a difference also between taking a realistic assessment of the facts of a situation for the purpose of making a realistic, fact-based assessment, versus “lawyering” the facts to get to a preferred conclusion. The former is healthy and appropriate: anxiety does skew our perception of facts, and it’s good to ground ourselves in objective evidence, whatever that evidence might say. The latter is an attempt to reassure the fear away, and the relief it offers just doesn’t “stick.” The anxiety tends to come back with a new what-if: “Oh yeah? You can handle losing that customer? Well what if you you lose several customers all at once? Then you won’t make your mortgage payment!” If you notice that happening, you want to slap a big, sticky label on that thought: that’s anxiety! And the answer is: “I don’t know. Yeah, I might lose every customer at the same time, lose my house, and end up on the street. But how likely is this? Is it an appropriate use of my time to plan for this contingency right now?”