The 3 of Cups represents hope, faith and love. The 3 is a reward number and in this suit of Cups your feelings during that number will be that of joy and self-contentment.
This card will test your abilities to enjoy hope, faith and love, in the widest. Let go of all doubts and enjoy the comfort of the innocence of a child who believes all will turn out for the best.
You might be feeling a lot of optimism about the future, and this is not unjustified, even though parts of the world might believe differently.
You can go overboard with enthousiasm and optimism as well. If this card falls in a negative, upside-down way, try to be more realistic, so you don't get disappointed later.