It all depends very much on the company you keep, the language used
at home with family members, how much and what you read, the TV
programs you watch, and which language you THINK in.
That's right, thinking has a language too.
IN Singapore, it is difficult to say - speak proper English in
daily life. Why? Because when you do, people around you such as the
hawker, the Taxi driver, or simply any person on the street you
speak 'proper English' to, may not understand you well. Or worse,
feel that you are trying to be Ang Mo.
Therefore, improving in the English language can rightly remain a
private, niche, and onerous endeavour.