All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
What you mentioned is not disbelief, for the guidance in the sense of direction, instruction, and clarification is correct to attribute it to other than Allah, The Exalted. He, The Exalted, Says (what means): {And indeed, [O Muhammad], you guide to a straight path.} [Quran 42:52] It seems that this is what you meant with your statement.
As for the divine guidance that is specific to Allah, The Exalted, and may be attributed to none but Him, it is the guidance of success and the divine inspiration. This is what is meant by His statement (which means): {Indeed, [O Muhammad], you do not guide whom you like, but Allah guides whom He wills. And He is most knowing of the [rightly] guided.} [Quran 28:56]
Lastly, we advise you to disregard these whisperings and pay no attention to them.
Allah knows best.