How can you be certain that the meaning you are intending to convey to yourself when you think in your native language is the same as the meaning that you interpret from your own thought? — MonfortS26

Meaning isn't conveyed by language, it is created by it. The non-verbal thoughts you have don't have any meaning. There is the concept of "acting without acting." It is possible to act without conceptualizing what you are doing. Non-verbal thoughts translate directly into action without going through words/self-consciousness. It's like sublimation - ice changes to water vapor without ever going through a stage as liquid water. It's considered a good thing.