Often you could hear the phrase “out of the mind”. This means go crazy.
Most people interpret “out of the mind” as literally getting out of the mind. In reality, it means stopping all the thinking (be it words, numbers, symbols or images) and letting the mind go blank. The words “out of” means getting away from our conscious mind and into another mind. This “another mind” could be subconscious mind or some higher self consciousness.
When we stop all thoughts, our consciousness will have to shift to somewhere else. It cannot be in a void. We could really go crazy if we are in a void for long.