Hi Ena. The more you practice, the more English you will remember. A good way to start is to practice English with a person from the same country (or with the same accent) as the person who taught you English. This is because that person's English will sound familiar to you. This familiar sound will trigger your memory, and you will start to remember things you thought you had forgotten! For example, if your English teacher many years ago was from London, and yesterday you spoke English with someone from Canada, the U.S., or even El Salvador, you might think you have forgotten a lot. However, maybe it's not that you've forgotten at all! Maybe you are just not used to that person's accent or "local English". Accents can sometimes be a little confusing until we get comfortable with them. The only way for you to feel comfortable again is to keep practicing. Good luck!