Hi... Our personalities are a product of several factors like, Genetics , Environment , Individual differences in perceiving our environment, Education, Peer Groups, Teachers, Friends, etc.
You can't conclude that you are unlike your parents because they are not your biological parents. This conclusion is more emotional than scientific.
You have received parenting from them so you would have developed certain traits like them but may be you were different as a child and as a young adult now. So you have developed your own ways of perceiving the world and dealing with it.
You don't need to fit into your family environment, you are already part of it and infact you form it.
Next Steps
Start taking Counselling Sessions from a Psychologist.
Health Tips
Mr. Gunjan Maithil
Senior Psychologist
Cell: Nine Six Seven One Three Zero Three One Three Four (whatsapp)
Website:
https://gunjanmaithil.wixsite.com/therapy
App: http://wix.to/fECHB08?ref=cl