Mercury in the 10th House
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  For this planet to operate well in this house, you need an occupation that is 
  intellectually stimulating. Without it, you may find yourself restless and 
  changing jobs often. A position in the media, publishing, or telecommunications 
  might work well for you. If Mercury is in an air sign, professional sales are worth 
  considering. You are talented at solving logistical problems involving society. 
  You can get to know yourself through dedicating yourself to your work and 
  following your instincts. You want to be considered clever, intelligent, and 
  industrious; you enjoy impressing others with these characteristics.  
   
  The tenth house is associated with career, ambition, and reputation. Mercury will 
  influence the perception you have of these associations, as well as your attitude 
  about people in authority. If Mercury in the tenth house receives challenging 
  aspects from other planets, you may experience problems with communication 
  and understanding concerning your work and other areas of your social life.