“The biggest hindrance to our meditation is constant intrusive thoughts. This is normal for everyone and from the beginning you should expect it. The nature of our mind is to think, and it is childish to imagine that we can simply turn that process off when we wish to.
Our minds have been almost completely out of control for most of our life. Recognizing this can help us to be practical and patient—it may take us some time and a lot of skillful practice to tame the crazy ‘monkey mind.”
~Bob Sharples, “Do The Thoughts Ever Stop?”
Open Mindfulness Meditation 