Every trick in the book for getting your dialogue to LOOK, READ, and SOUND like it was written by a high paid studio writer.
You don't have to travel the world to have a smorgasbord of life experiences. You can have an infinitely rich life—full of fascinating characters, conversations, interactions, adventures, relationships—without ever leaving your hometown.
Don't blame writers for a dearth of originality. They're busy writing, developing, and pitching the most creative, engaging stories they can... but they don't get to decide whether those stories get made.
A TV writer's job is NOT to dream up the best stories possible. It's to dream up the best stories possible within the creative and practical confines of the show.
If you want to get your pilot to producers, agents, or executives, the only thing you can do is move to Los Angeles. I know you can find script consultants, books, seminars, or agents who tell you otherwise, but THOSE PEOPLE ARE LYING.
You wouldn't begin building a house without an infallible blueprint... so why begin a script?