From The Top Ten Distinctions Between Millionaires and The Middle Class by Keith Smith, PP 22,23.
"Talking about ideas requires a different vocabulary than the middle class uses. Use words like possible instead of impossible, can instead of can’t, and I will instead of I should. Millionaires have positive vocabularies. This is not “be positive” hocus-pocus. Words are powerful. Listen to your middle-class friends and you will ﬁnd their conversations are much more pessimistic than optimistic. Millionaires speak with a strong faith. They believe they can turn their ideas into reality—and they do."
Please rephrase the highlighted part as I was not able to understand it as is.