Mercury is usually retrograde in the solar return chart every six years.
When Mercury is retrograde, it is time to be introspective, especially about those things related to Mercury's house placement. You should be doing a lot of your own thinking and learning rather than depending on others. Integrate previously acquired information into your own individualized mindset. Think of your mind as an over-loaded cabinet or closet seriously in need of filing and organization. It is time to process. You probably already know everything you need to know to handle a certain life situation. If you continue to depend on others for advice, you will find conversations meaningless within the context of your own intellectual needs and experience. Be aware that your mental processes are not very receptive to new information at this time. Your mind is like a cup that is filled to the brim. Any additional knowledge spills over and is lost. Work toward integrating what you already know.