Novak Djokovic is one of the most decorated tennis players of all time. Yet even after all the trophies and glory, he still holds his racket tight with a deep anxiety about never being enough — a feeling that formed during his tumultuous upbringing in a poverty-stricken and war-torn area of Serbia trying to live up to the immense sacrifices his parent's made to support his pursuit of the country’s most expensive sport. However, he hasn't just used grit and competitiveness to overcome the ...