PROVERBS 16:24
"Gracious words are a honeycomb, sweet to the soul and healing to the bones."
I believe everybody has already had an experience trying to help someone in need. I have learned that the words can be so sharp as a knife. They can cut the good, as they can cut the bad.
How to avoid "who-are-you-to-tell-me?
Two things: love and humility
Don't hide yourself as a hermit crab. You know, since you start growing, the shell is going to be tight, and probably you are not going to fit properly inside, and then you have to look for a bigger one to live.
Spread your love, share your heart, listen to God's voice and live.