The Watchful Gate

(Note: local copies of linked resources are provided for continuity - many of these sites seem to be down a lot)

The Rule For Attending To Oneself For One Dwelling In The World - By St. Ignatii Brianchaninov

Written For A Certain Layman As a Result of His Desire To Live A Vigilant Life In The World

WATCH - A Sermon by St. John the Wonderworker of Shanghai and San Francisco

Preserving Inner Contemplation and Remembrance of God
[local copy] - by Archbishop Theophan of Poltava

Do Not Resent, Do Not React, Keep Inner Stillness [local copy] - by JONAH, Metropolitan of All America and Canada (formerly abbot of the Monastery of St. John of San Francisco).

Why Lay People Can and Should Read Monastic Instructions [local copy] - by St. Theophan the Recluse

Notes on the Jesus Prayer (PDF) [local copy]- by Fr. Artemy Vladimirov

Prayer of the Heart: the duty of those living in the world  [local copy] - by St. Theophan the Recluse

Unceasing Prayer for Those in the World [local copy]- by St. Gregory Palamas 

Introduction to the Philokalic Writings of St. Gregory of Sinai [local copy]- From Elder Basil of Poiana Marului: Spiritual Father of St. Paisy Velichkovsky (Orthodoxinfo.com)

Monasticism and Life in the World [local copy] - from letters of Optina Elder Ambrose

Salvation In The World [local copy]- by Archbishop Hilarion Alfeyev

The Unceasing Essential Practice - Pith Sayings by St. Theophan and Others

More quotes related to Spiritual Life in the World 

Being Within - Excerpts from The Path To Salvation - By St. Theophan the Recluse [local copy]  A primary textbook of spiritual life which distills the essence of Christian Spirituality for those in all walks of life.