Be aware that “fear” is a good sign, it’s a mechanism of protection and survival of your body preparing it to a specific dangerous situation or even a strong emotion linked with your higher levels of anxiety, when you are gripped by fear, your body is getting ready for a big action that may happen. The first thing you have to do is to learn how to deal with your “fear”, you should not let it control you completely, on the other hand, you are the only one who have to take control of your body, if you learn how to control your fear and its physiological reactions, for sure, you will be able to think clearly without any level of hesitation and being capable of performing well and speaking well enough.
Another aspect that you have to take into account is to admit that you have fear of speaking and learn how to deal with it, as soon as you admit to yourself your own fear, getting rid of it is just a matter of time, in my opinion the only way to overcome your fear of speaking is to seek or engage every opportunity to speak English.
You’ve probably already heard that “Practice makes perfect”. Don’t hesitate! If you get an invitation to speak English, don’t throw this chance away and grab this opportunity to start getting over your fear.
Before you engage in a conversation, take a deep breath, control your emotions and fear, I can guarantee that “the fear of speaking” is a gigantic imaginary monster that you have created in your mind! As you get into in a conversation and if you are not still confident, you can let the other person know that you are too shy to speak and ask them if they can help you out, the “key” here is to admit your limits, to be your own and not pretend to be something you’re not, if the other person is polite and wants to help you, accept any kind of criticism and learn from any suggestion that they may give you.