Four self-made millionaires share the subtle ways in which wealth strains relationships, and how financial success ultimately cost them friendships.

Still, millionaires aren’t devoid of relationship issues. In some ways, they can experience wholly unique ones, because “the world is not very compassionate to that kind of trouble and pain,” Amanda Clayman, a financial therapist who hosts Fresh Produce Media’s Audible series “Emotional Investment,” told Business Insider.