Start with high-confidence mysticism books, then narrow by subgenre or adjacent topics.
Angels in My Hair
Lorna Byrne
New Seeds of Contemplation
Thomas Merton, Sue Monk Kidd
Practical Mysticism
Evelyn Underhill
The Showings of Divine Love
Julian of Norwich
The Prophet
Kahlil Gibran, Khail Gilbran
Showings of Divine Love
