A little over twenty years ago I was out of work and I went on a course about starting a business. One morning a lady arrived, told us about the Myers Briggs test, gave us the test, and told us our results privately. In practice we each told the group our scores.
Thinking about it all, after a week or so, I realised that the result of the test was indicating to me that running my own business was not something I was suited to do. That would not have stopped me of itself, but it sort of fitted in as relevant, sort of crystalising the situation, if that is the way to put it.
I have not tried this test yet.