Right timing, right place, and right people — none of the three can be missing.
Tips
history
From 《孟子·公孙丑下》: '天时不如地利，地利不如人和' — 'right timing matters less than right terrain, and right terrain matters less than people in harmony.' Mencius's point was that human unity beats every other advantage; the abridged 地利人和 keeps the latter two and is now used to describe favorable circumstances generally.
usage
Often paired with 天时 (tiānshí, right timing) as the full set 天时地利人和. Drop one element and a Chinese reader will mentally fill in the others — the phrase is that load-bearing in business/military rhetoric.
