Perhaps try to limit what we do around the world that pisses people off, and up our protection at home.
We'll always have enemies...but our current foreign policy is made up so we get of two types of people. We either get "friends" who are really just trying to use us for financial gain or protection from another nation, or we get enemies. Either way one group hates us and the other will hate us the minute we can't provide use to them any longer.
Funny though, other countries who don't butt into world affairs so much don't have the problems we have with so much world hatred.