Is it common to think you are going crazy when on the path to awakening?
Yes, of course! Ego is crazy, and the “path” makes you see it in all its glory.
There are two ways you can go out of your mind. You can go into your mind or out of it. We say someone is “out of his mind” when he is in reality too deep into his mind. When you truly go out of your mind, that’s enlightenment.