I often get this question, how do I know God is speaking to me and it is not my mind?
It's simple. When God speaks, it adds knowledge to you, it increases your wisdom; your mind will only speak of what it knows.
So when you see that the thought coming to you is making you aware of what you didn't know before, that's God speaking to you.
As you begin to practice listening to God, I pray your sensitivity will increase and you will begin to hear and know His voice in the name of Jesus, amen.
Let this message bless you.