Negative words are powerful boomerangs so be careful what you say about people and yourself.

The saying frames speech—especially criticism and self-talk—as something that rebounds on the speaker. “Boomerangs” suggests that negativity aimed outward can damage relationships and reputation, while negativity aimed inward can reinforce shame, anxiety, or self-sabotage. The warning to be careful “about people and yourself” links gossip and harsh judgment with internalized narratives: what we repeatedly say becomes what we believe, and what we believe shapes how we act. In that sense, the quote advocates mindful language as a form of ethical conduct and self-care, implying that constructive, compassionate speech protects both community and personal well-being.