I suspect English is not your first language based on your profile and I'd like to give a tip: "until now" implies that what follows is no longer true, due to a

I suspect English is not your first language based on your profile and I'd like to give a tip: "until now" implies that what follows is no longer true, due to a recent event that changed it. "So far" is probably closer to what you wanted, which expresses that it's still true, but based on limited time / experience.