Adjust your own halo
I'm sure you have heard of the halo effect. It's when one attribute we value in a person is projected across other characteristics that are not in evidence. A simple example is when we assume someone is smart or good based on the fact we find them attractive.
An issue for recruitment, and probably the basis of aspects of romantic love. Lot's of room for projection there.
But ONE THING I would love to know is if you have ever haloed yourself?
Maybe you get really good in one area of what you do and because of this, you think you'll be able to do this other thing just as easily. I'm good at running, so I'll be good at jumping. I'm good in my job, so I will be a good leader for my team.
I think positivity is necessary for achievement. But when we are overconfident in an untried area we can set ourselves up for failure. That can be because we don't feel the need to put in the required effort to get really good.
We need to be a bit humble about developing our capabilities. When we are learning ONE new THING, having adjacent skills is great, but they may not get you over the line.