One of the greatest limits to what God can do in our lives is Comparing ourselves with the wrong people. The latter part of 2 Corinthians 10:12 says, “But they measuring themselves by themselves, and comparing themselves among themselves, are not wise.”
This isn’t saying that we can’t be inspired by seeing what God is doing in others. Rather, this is specifically speaking of not judging things according to the flesh. Paul rebuked the Corinthians in the first part of that chapter for judging him based on outward things like appearance. In stature and speech, Paul was not the greatest, but they were using the wrong standards. In spiritual things, Paul was a giant by whom we should be inspired.