The 10th house is the house of career, karma, and public status. It is the natural house of Saturn (Shani). Rahu is the planet of foreign lands, illusions, and insatiable desires.
When Rahu sits in the 10th house, it creates a burning, almost obsessive desire to leave the homeland. The person will constantly dream of settling abroad, working in multinational companies, or traveling the world. Because Rahu is sitting in Saturn's house, this desire is fueled by the dark, ambitious energy of the "night of Saturn."
The Reality Check: While this placement can absolutely take you abroad, Rahu is a planet of illusion. Many people with this placement spend their entire lives dreaming of foreign lands while neglecting the opportunities right in front of them.
The Lal Kitab Advice: If you have Rahu in the 10th house, do not let the illusion blind you. Work hard in the present moment. To balance this energy, always keep your head covered (with a cap or turban) when you are out in the sun, and never disrespect blind people.