Joel Friedland calls himself the most risk-averse real estate investor in the United States, and he has the scar tissue to prove it. In 2008 he was carrying $70 million in personal guarantees across 50 buildings. Ten of them were going to have to be sold at a loss. He sat his wife down and told her, and he watched her fall back in her chair. What followed was months of depression he describes without flinching in this conversation. He came out of it with a conclusion most investors never reac...