"What I say to you in the dark, tell in the light; and what you hear whispered in the ear, proclaim up on the housetops." Matthew 10:27 AMP
When Jesus speaks to you, tell somebody, share his news. You are a channel for Him to share his good news, his love, his kind words, his encouragement, and your faith.
So speak when prompted by the Spirit...
someone needs to hear it.