It is true that when you r new here it takes time to adjust with the new culture, environment and all. it was same with me and still having same feeling. but some people says its gulf syndrome or so and sometimes it takes one year to adjust here. But once you r adjust here u will feel better here compare to India as I am also from Delhi, India and these places r very fast but I am also trying to get adjust and talking to people that how they get accommodate in this culture. that way i boost myself and trying to follow some advice like walking, exercise and all.
I am also feeling give one year. then think next otherwise it will be too rash decision.

all the very best...!