https://franciscojosecrespo.blogspot.com How to do mental prayer, that is, listen to God, explained by an Opus Dei numerary. The previous prayer of recollection, wishing to fulfill the Will of God or using the mind well, were conditions used by the first Christians but almost forgotten today. In Opus Dei they try to practice assiduously. In my blog https://franciscojosecrespo.blogspot.com you will find practical examples.