You can say a kind word. You can speak about 4800 words per day, why not devote some of them to kindness?
You can encourage someone to try again. Expressing confidence in them will provide the emotional support they need to succeed.
You can allow God to speak to you. Instead of having a “sound proof’ head, spend some time in careful Bible study.
You can be great or you can remain just another insignificant human being. How to be great? Jesus said, “whoever desires to be great among you, let him be your servant” (Matthew 20:26).