that's what eric trump does.r the kids of st. jude's hospital. and ton ald trump adds that sometimes you just have to be tough. there's no better tip than learning to say no. >> how do we say yes and how do we say no. >> well, for one thing, you have to be very careful. because a lot of people give their money and give their money and in the end they have nothing left for themselves. >> virtually all lottery winners get letters asking for money. they have heartfelt pleas. >> there are so many different problems in the world. some of them are big. some of them are little, but they are just horrible and horrific problems. there are people that come to you with unbelievable stories. >> trump says the hard part is to emotionally ignore those letters or risk become being a charity case yourself. but even he admits sometimes you make an exception. >> i remember years ago a woman, annabelle hill, and she was going to lose herb farm, had no money, and i helped them out. it was just a story that bothered my. >> that's a s