The moment you decide to become a Fluent Speaker in English, engage yourself in Speaking regularly.
Many people start speaking with great enthusiasm. When they do not get adequate support & positive response from others, they get disappointed. Sometimes, this disappointment does not allow them to try again. They feel resigned and start branding themselves in a negative way.
Not to fall into this trap, Speaking with known people is the best way to start. You will have comfort in the initial stages when you speak with the known people.
Speaking with ALL your friends & family members is also a challenging task as you have been habituated to speak in your mother tongue with them so far. You may get stopped due to shyness, hesitation, fear though they are ready to speak with you. In some cases, they may feel uncomfortable to speak in English all of a sudden with you.
Among all your friends and family members, FIRSTLY, start Speaking in English with one person. When you try to speak in English with all people at a time, you may not get a positive response and necessary support from them. It may be a challenge for you too. If you start speaking with one person, preferably someone who can speak better than you and can help you in correcting your mistakes and encourages you always.
When you start speaking with that one person, start speaking all the matters in English – all your thoughts, knowledge, imaginations, views & experiences. Do not limit your English Speaking to One area i.e. Office Work / Subject Learning. When you try to speak in all the circumstances, you will get exposed to various words & usages.