When a person should be spoken with, and you don't speak with them, you lose them. When a person shouldn't be spoken with and you speak to them, you waste your breath. The wise do not lose people, nor do they waste their breath.
I have never seen one who really loves goodness or one who really hates wickedness. One who really loves goodness will not place anything above it. One who really hates wickedness will practice goodness in such a way that wickedness will have no chance to get at him. Is there anyone who has devoted his whole strength to doing good for even as long as a single day? I have not seen anyone give up such an attempt because he had not the strength to go on. Perhaps there is such a case, but I have never seen it.
Do not worry about not holding high position; worry rather about playing your proper role. Worry not that no one knows of you; seek to be worth knowing.