In the name of God. Salam. Below are some great articles on spiritual Islam. For more articles, you can refer to the Quarterly Islamic Journal: Message of Thaqalayn
Perspectives on the Concept of 'LOVE in ISLAM'
Outcomes of the SPIRITUAL JOURNEY
Sincerity for the Sake of God
Spiritual Journeying in the Words of Muslim Mystics
the Philosophy of Islam
Pearls of Wisdom
the Process of Self-development
Self-control and Self-purification
Human Knowledge and Prophetic Self-Consciousness
Love, Thankfulness and Humbleness
Humility in the Conduct of Great Scholars
Different Treatments of Spirituality
Practical Instruction for Spiritual Journey
the Character Traits of the Prophet Muhammad I
the Character Traits of the Prophet Muhammad II
the Life of the Holy Prophet
Reflections of a Muslim for the Oppressed
Intercession
Good-naturedness in Islam
Love for the Prophet and Ahlulbayt
God's Mercy through Fasting
The Emphasis on Justice in Nahjul Balaghah
Mourning for the Beloved
Love of God
Nearness to God and Worship
Perspectives on the Concept of 'LOVE in ISLAM'
Outcomes of the SPIRITUAL JOURNEY
Sincerity for the Sake of God
Spiritual Journeying in the Words of Muslim Mystics
the Philosophy of Islam
Pearls of Wisdom
the Process of Self-development
Self-control and Self-purification
Human Knowledge and Prophetic Self-Consciousness
Love, Thankfulness and Humbleness
Humility in the Conduct of Great Scholars
Different Treatments of Spirituality
Practical Instruction for Spiritual Journey
the Character Traits of the Prophet Muhammad I
the Character Traits of the Prophet Muhammad II
the Life of the Holy Prophet
Reflections of a Muslim for the Oppressed
Intercession
Good-naturedness in Islam
Love for the Prophet and Ahlulbayt
God's Mercy through Fasting
The Emphasis on Justice in Nahjul Balaghah
Mourning for the Beloved
Love of God
Nearness to God and Worship