One of the biggest compliments a boxer can be paid is when someone says that he “has heart.” Inside the boxing ring, that means you can take a punch, you show an undeniable will to win, you relentlessly fight to the finish or are just plain unstoppable. As much as any fighter would take pride by having his name associated with that particular phrase, “he’s got heart”, how many actually work on it? Wait…what…you can work on it? Yep. If you think that having “heart “is something you’re either born with or not, then think again.