..if we want to be able to truly think, that is, to receive, formulate and form valid and viable thoughts, we must first of all empty our brain of all this vague and unruly mental agitation. And this is certainly not the easiest part of our task. We are dominated by this irrational cerebral activity, we do not dominate it.
Only one method is worth recommending: meditation. But as I was telling you last time, there are many ways of meditating; some are very effective, others less so.
Each one should find his own by successive trial and error. However, one thing can be recommended to everyone: reflection, that is to say, concentration, self-observation in solitude and silence, a close and strict analysis of the multitude of insignificant little thoughts which constantly assail us.
During the few moments you devote each day to this preliminary exercise of meditation, avoid, if possible, the complacent contemplation of your sensations, your feelings, your states of mind.
Ref: Words of Long Ago