A critical spirit is not teachable. Be open to listen to what others say. Even if their theology isn’t 100% inline with yours, you may still learn some things from them. Chew the meat and spit out the bones. Anything that doesn’t line up with the Word of God is rejected.
Your theology could be challenged though. Be open to hear the voice of Holy Spirit teaching and instructing behind their voice. You may be surprised at who you can learn from when you maintain a teachable spirit!