Think about how much more you can learn by listening instead of speaking. You can't do both at once, so why do you continue to try. It is with great effort that you try to have others hear what you have to say. It's not that what you have to say is not important, it's just that they are also speaking at the same time. Listening is a learnt skill which not many people are very good at. Those who are skilled at it are ahead of the game. Their knowledge not only comes from what they learn through academics, but what comes from paying attention to what others are saying. Sometimes you can also get information by listening to what is going on around you. You'd be surprised as to how much you can pick up by being attentive to your environment. Although there is a time and place to speak your mind, being quiet is a skill worth excelling in. Silence is golden when you want to learn more about yourself and others. Today, speak only when necessary. Words are wasted when they are used only to fill in the silence. Be silent and you will learn so much more about the world around you.
Be really quiet and it might not fly away...
(Sometimes I'm guilty of talking too much, especially when I'm excited about something. But I understand the value of being silent after a long day at work. Nothing is like the peace and serenity I find at home when I can relax. Being silent is nice even when you have something to say.)