A quiet mind does not mean that there will be no thoughts or mental movements at all, but that these will be on the surface, and you will feel your true being within, separate from them, observing but not carried away
Never allow weakness to overtake your mind. Remember Mahavira, remember the Divine Mother! And you will see that all weakness, all cowardice will vanish at once.
Try to be mindful, and let things take their natural course. Then your mind will become still in any surroundings, like a clear forest pool. All kinds of wonderful, rare animals will come to drink at the pool, and you will clearly see the nature of all things. You will see many strange and wonderful things come and go, but you will be still. This is the happiness of the Buddha.
As in all infant sciences, the universal habit of the human mind - to take a partial or local truth, generalise it unduly and try to explain a whole field of nature in its narrow terms - runs riot here (in psychoanalysis). Moreover, the exaggeration of the importance of suppressed sexual complexes is a dangerous falsehood.
The greatest mistake physicians make is that they attempt to cure the body without attempting to cure the mind, yet the mind and the body are one and should not be treated separately!