Great relationships have 3 essential ingredients — and one factor that can ruin everything

The difference between a good relationship and a great relationship could boil down to one formula.

Simon Sinek, author, inspirational speaker and founder of The Optimism Company in New York, shared his breakdown of core compatibilities for successful couples.

Sinek, who has built a following of millions with content about leadership and interpersonal communication, said he developed his "3+1" formula after years of considering what makes partnerships work.

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