Your mind is an instrument, a tool. It is there to be used for a specific task, and when the task is completed, you lay it down. As it is, I would say about 80 to 90 percent of most people's thinking is not only repetitive and useless, but because of its dysfunctional and often negative nature, much of it is also harmful. Observe your mind and you will find this to be true. It causes a serious leakage of vital energy.
Eckhart TolleIf you are in the habit of creating suffering for yourself, then you are probably creating suffering for others too
Eckhart TolleThe voice in your head also creates a huge amount of problems that aren't really problems. They're just things that haven't happened yet, things that could happen tomorrow or next week. Listening to unreal problems has another name: worrying. That's what the voice in your head does. It what-ifs. It frets. It agonizes, and you can no longer sense the joy of life.
Eckhart TolleMost people don't know how to listen because the major part of their attention is taken up by thinking.
Eckhart Tolle