This sentence can be understood as an encouragement to encourage people to be proactive and keep making progress. Don't give up your efforts just because you are not as good as others. You should constantly improve your ability and quality, keep glowing and make yourself better. At the same time, don't just see the light of others and ignore your own value and ability. Believe in yourself, strengthen your beliefs and goals, and be the best you can be.
In short, this sentence is a positive encouragement, encouraging people not to stop growing and making progress, but to continue to shine and make themselves better.