Hi Rafik, congrats on the move! I think the important thing is to be brave! As native English speakers, we are VERY used to non-native speakers using English, so we are very accepting and understanding. Don't worry about making mistakes, just get out there and speak as much as possible at the supermarket, on public transportation, or anywhere! In about 6 weeks your brain will start to automatically switch over to English, and you will surprise yourself at how natural it is feeling to you. Best of luck!