Blankness of The Mind
You are in a state of illusion
Karmas are the reason why you are not able to attain silence. It is a web spun out of your own anxieties and worries. If someone gives up his karmas and responsibilities in an attempt to meditate, he is not truly enlightened.
When you have completed your karmas, you will attain blankness of mind. Every second, you will live perfectly and productively. Even enlightened beings cannot stay away from activities. You are assigned some responsibilities to fulfill till you leave the world. You cannot escape those.
And yet, you will not be living for yourself. All your wants will be more than fulfilled by The Supreme Cosmic Force for which you are working.
God is the Only Master who never fails you; the result is already known - - you will pass - - but He will continue testing you till you endeavour to succeed!