Labelling the thoughts
Instead of getting involved in the ‘details’ of a train of thought – give it an overall ‘label’ – for instance – “thinking about the argument again” – this wakens you up and stops you from getting pulled in.
Negotiate with the mind
Try negotiating with your mind if it INSISTS on thinking, planning or figuring something out.
Tell yourself that you will be able to resume thinking in ten minutes time and that this period of mindfulness will help you think in a far more effective and purposeful way.