language bias

When i use english in writing or in speaking, i seldom talk or write with bias. I use the appropriate he or she or use he/she when i can refer to both genders. I usually use or have bias when i talk in filipino, only coz i thought it was supposed to be the right way. Like referring to doctors as Doktor and Doktora, I thought it was the proper way. I didn't know till know that its the not the right way, but not many know of is, i think only people who took up or is taking gender classes know the difference...I wasn't aware that you shouldn't say gaga just gago to refer to both male and female.

It's weird that we are not even aware of how we talk and write, we just write the way we got used to.. is it really possible to change the way we talk and write if we got so used to certain things already?