It is often expressed that "God will not forgive me. I think I have committed the unpardonable sin".
The pharisees accused Jesus of doing the works He did by the power of Satan(Matt. 12:24). Jesus replied by stating, in effect that to attribute to Satan the works of God was the unforgiveable sin(Matt. 12:31-32).
Please Read these Scriptures and Meditate on what God is saying to you.
MATT. 12:24; 31:32
1 TIM. 1:12-13
1 COR. 12:3
1 JOHN 1:9