Abu Said Radiyallahu 'anhu narrates that Rasullullah Sallallahu 'alaihi wasallam said: "None of you should belittle himself."
The Sahabah asked: "O Rasulallah! How can anyone of us belittle himself?"
He said: "He, who sees a matter concerning Allah about which he should say something, but he does not speak — Allah, the Almighty and Majestic, will ask him on the Day of Resurrection: What prevented you from saying anything about such and such? He would say: Out of fear of people. Then Allah will say: Rather it is I whom you should have feared more." (Ibne Majah)
This Hadith is very important for those of us who have anyone over whom we have some level of responsibility. That may be our son, younger brother, a nephew or niece; it may even be someone like a close friend or cousin. People who we would give advice to any other matter, like studies, financial problems, family issues etc. If we are so close as to care for them in matters of Dunya, then why would we keep ourselves from advising them regarding Aakhirah, which is the most important issue of all! But sometimes, we feel like encouraging them in matters of Deen would make us seem different from them; we fear that Dawah would cause a dent in the relationship, and out of the fear of being hurt, we don't say anything. Although we must remember, that Dawah, particularly to those who are close to us, should be done with Hikmah, accompanied by Dua. May Allah give us Tawfique to practice Dawah as Allah would be pleased with.