Why did i choose my major?

 I study chemistry and pharmacy, i find the chemistry ver entertainment and interesting since im in the highschool. When i was a child my dream job was astronomy, because i loved the sky and stars, but when i started grow up i found it bored and i lost interest.

In the highschool i has many options for study, between them is medical technology or marine biology, but this careers not have a lot chemistry and i want have a laboratory in the future, so the career what most near of my objectives was chemistry and pharmacy or chemistry. 

My experience in the university has been difficult, in my first year havent prepare for the subjects, so i failed almost everything, but now im more accustomed to the demands of university