I fully understand the predicament you are in. I'm currently learning the German language and I experienced exactly what you do now. Unfortunately, I have to tell you that there is no "brief or quick" way of overcoming the problem you have. Your command of the language will only improve with constant, regular practice. I advice you to find a practicing or learning partner. Maybe someone who was studying the English language with you at the same instition. You can agree to meet one another regularly for coffee or tea. In this time you will then only speak to one another in English. I guarantee that you will significantly improve your spoken English. It worked for me when I started learning the German language..