Growing in the Lord is most exciting. Such growth seems to be without charts to note progress. Where one church grows by addition another develops by subtraction. Biblical examples are Acts 2 for the former and the concept of Him pruning for the later. Such opposite processes calls for caution in matters when it comes to gauging the personal growth of self and of others.
We want to be careful not to allow ourselves to believe we are better than others because we have accepted some ideas and rejected other concepts while groups didn't seem to catch the wave of spiritual brilliance we thought we snagged. That's not good news.
We must refrain from believing we read the best version, do the best church, sing the best way, or do missions better. None of those can be established without comparison. Paul wrote in II Cor. 10:12 that anytime we compare ourselves to ourselves....we are without understanding.
Be thrilled over what God let's you do in the kingdom. Let us refrain from believing we are a notch above any other believer. It's by His grace any of us get to be a part of his fabulous work.