After being fooled and loosing so much money- I think one should be selfish
Now show other the money you have and try to avoid people who try to come close to you to get money. Save your money - don't spend on shoes and clothes and unnecessary thing - life is so unpredictable
Don't always say yes to your relatives and even your friends. Even how badly they need money but it all depends to the situation that they're in. I've seen people say that if it's between life and death then they might say yes. But if it's not that crucial at all, they'll still would say no.
That's the firm rule that I've seen for most people if it's about giving a hand to their friends or relatives because it's your money, you've worked hard for it and you just can't let it go when someone asks you too.