Warning: Do Not Share Your Good Fortune
Telling your "friends" about your good fortune will make them hate you.
Don't tell your "friends" of your good fortune—they'll hate you for it.
Envy and resentment make the world go round. If we could see the secret resentments people wrap in pink ribbons and do their best to disguise, the world would look unbearably ugly. The most extreme form of this behavior is schadenfreude, which is the delight in other people's misfortune. So, if you have a bit of a win on the lottery, don't tell anyone - they will hate you and be solicitous at the same time - even Satan himself can't bear to see such behavior. The reason people flinch at the good fortune of others is simple enough to understand. Since the world, and specifically human life, is a competition for resources, you might see someone else's good fortune as a threat - they suddenly have more resources and power than you do. Remember, when you are weaker, others are stronger, and when you are stronger, others are weaker. This rule is the law of the beast, and we are all beasts under the polite manners and charming exterior.
However, this is just the tip of the iceberg of resentment. It doesn't do to display your happiness either if, indeed, you are happy - people will hate you for that too. The majority of people are bitter and resentful because they believed in life, and life crapped all over them. So any display of power (and happiness is a power) will probably be met with inner resentment - how dare you be happy?