Horoscope and its truth- To what extent is true?

I am of the opinion, study of the horoscope is not an easy task.
This require great studies and I know very few person knows the correct study and its conclusions.
This i have tried and match my Horoscope with my wife after 30 years, the contents are 50% correct and rest is purely business /marketing style to make fool the person.
So one shoule be careful and can advise how one can read the correct horoscope. I had spare time and read and this is very confusing affair.
Same horoscope by three person had three opinions. so to whom you believe is also difficult.

Hi Rajeev
I agree with you
How can Horoscope of million of people can be described in few lines ? They just use some basic sentence which suites and fits on all.

I completely not believe in horoscope.