Pope Francis in his Apostolic Exhortation, Evangelii Gaudium, speaks of the danger of 'Spiritual Worldliness' His words are quite disturbing:
This worldliness can be fueled in two deeply interrelated ways. One is the attraction to gnosticism, a purely subjective faith whose only interest is a certain experience or a set of ideas and bits of information which are meant to console and enlighten, but which ultimately keep one imprisoned in his or her own thoughts and feelings. The other is ... trust only in their own powers and feel superior to others because they observe certain rules or remain intransigently faithful to a particular Catholic style from the past. ... In neither case is one really concerned about Jesus Christ or others. (EG 94)
I think the last line sums up the yardstick of measuring the depth of our devotion, piety and spirituality.