Waseelah

Q: Dua me waseelah de kar mangna kaise he? Jaaiz ya najaaiz? Khas tor par Nabi Paak (sallallahu alaihi wasallam) ka waseelah dena. Mazeed ye keh Sahaabah kiram (radhiyallahu anhu) or Ummahat ul Muminin ka waseelah dena kaisa he? 

Convincing one's parents that one wishes to study something Islamically beneficial

Q: I want to pursue a career that is more or entirely Islamically alligned but my parents want me to pursue architecture in which I have little to no interest especially as it is not Islamically beneficial (except obeying my parents). I can convince my parents and they will accept but they will not accept very happily. What should I choose?