In you horoscope chart there are twelve houses of bhavas each represent a different part of life. For example 5th house tells you about your children. Ruling lords (bhava athipathi) (planets / grahas) for 12 rashis are mentioned in a separate post (please refer that). Astrology predictions depends on other factors too.
6th lord in 1st house:
If the 6th lord is in the ascendant, the native will be sickly, famous, inimical to his own men, rich, honorable, adventurous, and virtuous.
6th lord in 2nd house:
If the 6th lord is in the 2nd, the native will be adventurous, famous among his racemen, will live in alien countries (or places), be happy, be a skillful speaker, and be always interested in his own work.
6th lord in 3rd house:
If the 6th lord is n the 3rd, the native will be given to anger, be bereft of courage, inimical to all of his coborn, and will have disobedient servants.
6th lord in 4th house:
If the 6th lord is in the 4th, the native will be devoid of maternal happiness, be intelligent, be a talebearer, be jealous, fickle-minded, and very rich.
6th lord in 5th house:
If the 6th lord is in the 5th the native will have fluctuating finances. He will incur enmity with his sons and friends. He will be happy, selfish, and kind.
6th lord in 6th house:
If the 6th lord is in the 6th, the native will have enmity with the group of his kinsmen but be friendly to others and will enjoy mediocre happiness in matters like wealth.
6th lord in 7th house:
If the 6th lord is in the 7th, the native will be deprived of happiness through wedlock. He will be famous, virtuous, honorable, adventurous, and wealthy.
6th lord in 8th house:
If the 6th lord is in the 8th, the native will be sickly, inimical, will desire others' wealth, be interested in others' wives, and be impure (or degraded).
6th lord in 9th house:
If the 6th lord is in the 9th, the native will trade in wood and stones (also means poison), and will have fluctuating professional fortunes.
6th lord in 10th house:
If the 6th lord is in the 10th, the native will be well known among his men, will not be respectfully disposed to his father and will be happy in foreign countries. He will be a gifted speaker.
6th lord in 11th house:
If the 6th lord is in the 11th, the native will gain wealth through his enemies, be virtuous, adventurous, and will be somewhat bereft of progenic happiness.
6th lord in 12th house:
If the 6th lord is in the 12th, the native will always spend on vices, be hostile to learned people, and will torture living beings.