And not only that, the untrue one actually has a relationship with the true one. It causes the true one to stop us. So it is not just some random untrue assumption hiding in the true one. It is an untrue one that causes the true one to stop us.
Knowing those two things: 1) that there is an untrue assumption hiding inside the true one, and 2) that the untrue one causes the true one to stop us, we can work out what the question is that will reveal it. The question will have to contain this causal relationship between the untrue assumption and the true one. So the question is likely to be this:
It is true that some people might think you are not as dynamic as you were. What are you assuming that causes that to stop you from becoming a relaxed person?