Learning to filter influences and associations, allowing freedom from such things as social media, political meanderings, and casual socializing.
There is a demon, known as the deluder, who visits the brethren especially at dawn, and leads the intellect about from city to city, from village to village, from house to house, pretending that no passions are aroused through such visits; but then the intellect goes on to meet and talk with old acquaintances at greater length, and so allows its own state to be corrupted by those it encounters. Little by little it falls away from the knowledge of God and holiness, and forgets its calling. Therefore the solitary must watch this demon, noting where he comes from and where he ends up; for this demon does not make this long circuit without purpose and at random, but because he wishes to corrupt the state of the solitary, so that his intellect, over-excited by all this wandering, and intoxicated by its many meetings, may immediately fall prey to the demons of unchastity, anger or dejection – the demons that above all others destroy its inherent brightness.
Evagrios the Solitary ‘The Philokalia’