In a horoscope 1st house namely ascendant is refers to head and its all about the native. If he is fine and active it reflects in his face which is the 2nd house.
A person will not have a smiling face when he is in pain or stress. House 2 shows the wealth of an native also. When house 2 is fine and he has money he will spend it through house 3 which are his hands. 3 also refers to neighborhood, relatives and siblings.
Suppose house 3 is fine and he makes short travels, communicates in an amicable manner and increases his influence naturally the assets and comforts have to grow which is house 4.
When house 4 that is mom to take care, heart etc is fine. Then with house, car and amenities he will have more leisure time which make him focus more on seeking wisdom and knowledge which is house 5. If house 3 that is palms and hand gets pain its an indication that heart which is house 4 might have an trouble.
House 5 is also children or progeny. Lack of ease is dis ease and mom suffers those 9 months. Dad gets some debts for education etc and naturally house 6 gets activated. House 5 means upper stomach and when that is not given care house 6 lower stomach also get into trouble.
House 6 is the house of health also and being healthy is the pre requisite for enjoying the marital bliss which is house 7 of marriage. House 7 of relationship determines the longevity. We are related with our spouse and all the five elements.
When house 2 dasa that indicates mouth and house 7 dasa comes it gives an indication that we might not be able to consume food as our relationship contract with this body made of five elements is about to expire
So house 7 has an impact of house 8. Its believed that the horoscope of an spouse can strengthen the longevity house 8 of her husband or wife as the case maybe.
House 8 is the house of hidden knowledge and longevity. When a person has knowledge of the true wealth of getting the grace of divine and longevity supports him next he will try to be, do and think good. Doing Good is dharma house 9 and he will seek the guidance of a mentor / guru
The guru / mentor or else the bhavath bavam 5th from 5th house is education and its 9th house which is higher education..after qualifying the native seeks a job or profession and house 10 is activated. House 10 or else the job brings him immense wealth or luck.
House of luck is 11 . Its adhrishta what cannot be seen but it doesn't means its without a reason. When a native does a post doctoral research ( house 9 ) and join an University to work as professor at USA ( house 10 ) he might get even a crore of rupee ( indian currency ) as his monthly pay package ( house 11 is luck ) luck is adhrista for which reasons cant be seen but definitely it has a reason. The native would have three decades in mastering the subject
When wealth exceeds sleep is lost or else he visits foreign lands. He spends on luxiries also.. which is beyond the neccesity also which is house 12
When he visits distant lands new travel experiences refines him in a better way. Meditation also is a travel in solitude and its house 12. Sleep also is akin to a brief version of death and every morning we start the day as a new person which signifies house 1
Suppose if i make major changes in house 12 during meditation :) it may impact all the houses . That's why training our mind to have positive thoughts is important for our success. We are manifesting the reality around us and our horoscope is the tool which helps us to achieve it better