What to do when you going in circles?

This will happen: You find the general cache location, but after a couple of hours of wandering around in circles, you still can’t find the cache container. You’ve double-checked the coordinates, the satellite coverage is good, and you’re starting to get a bit frustrated. Take a deep breath. Here’s what to do. You can always resort to using a hint. Most cache description pages have a short hint, but you have to work for it because it’s encoded.
The reason for the spy stuff is so the hint doesn’t spoil the fun for another cacher who doesn’t want to use the hint as part of his search. Fortunately, the hint is encoded with a simple substitution code (for example, A = M, B = N, C = O, and so on), so you don’t need to work for the NSA to be able to break it. The decoding key is on the right side of the page, and it’s pretty easy to figure it out by hand. One of the more challenging types of caches to find is a microcache. Instead of using large containers, smaller ones — like small pill bottles, 35mm film canisters, or magnetic hide-a-keys — are used that only hold a piece of paper that serves as the log. These caches are typically in urban areas and can be cleverly hidden to avoid detection by nongeocachers passing by.
In addition to the hint, you can also look through the logged visit comments that other people have posted who have already found the cache. Although most geocachers try to avoid including spoilers (way-too-obvious hints or commentary) into their comments, sometimes enough information leaks through that can help you narrow your search. How you go about finding the cache is up to you. Some purists will use only the coordinates and basic description of the cache, never using the hints or the comments. Other cachers decrypt the hint and read all the comments before they head out the door on a search. It’s up to you. There’s no shame in a DNF (Did Not Find); it happens to everyone. Go back to the cache location another day and try again.
Geocaching is supposed to be fun, so don’t take it too hard if you can’t locate a cache. Consider bringing someone else with you next time: Two heads are better than one, and a different set of eyes might find something you overlooked. Don’t be shy about logging a DNF for the cache at the Geocaching.com site. If a cache owner hasn’t visited the site in a while, a number of logged DNFs could mean that the cache has been moved or stolen by someone. Unfortunately, cache vandalism and thievery happen: For example, the cache you were looking for might have been stolen, and the database hasn’t been updated yet.