From The Baal Shem Attach your thoughts above – and don’t eat or drink too much and don’t increase your physical pleasure, and don’t look at any media (“things of this world”) rather try to separate yourself from the physicality – for when you look at it, you cause your soul to become coarse – our sages teach – "seeing causes remembering, and remembering causes desire" – and this was the sin of the forbidden tree – that it looked good and therefore it caused a desire.