Sure, I'm a doctor (but I can't prescribe any drugs if that is what you are looking for), but I am far from being all knowing. In fact, I know very little. All I know is ... what I know and what I know is mainly based on what I have been exposed to and the experiences I have had. The world is a big world. It is impossible to know everything. The only thing I know for sure is that God knows way more than me so I should always defer to Him.
Lord, thank you that I don't need to know everything because You do and You will let me know when I need to know.