Blindly trusting the first directions you get from a local
Instead… Cast a broad net of directions. Ask more than one person for directions to the same place. If the person hesitates or looks up like searching for an answer, kindly accept their help and look for additional help at the next street. Go with the general consensus.
Relying totally on Guide Books
Instead… Guidebooks are made to inform your travels, not to define them. Put the guidebook down and interact with other travelers and people at the destination. Allow yourself to explore and use on your own initiative; there is a lot more to a place than what is in any guidebook.