When we are learning to meditate, the mind tries to remind you that who is in charge. This entire exercise is about taming the mind. So initially when you start to meditate, you will get just about a million thoughts a minute. If this happens, just go back to the sensation of your breath at your nostrils for about five breaths. This should calm your mind down. Initially, you will end up doing this every 10 seconds but eventually, you will come to a point where you are able to control your mind.