Well-meaning advice of a seemingly spiritual nature is not available to ordinary humans in practice. It does not succeed because by its nature Reality is caught, not taught. Spirituality is an experience of Reality. Anything else is mere religion or speculation, not spiritual.
The ones who catch Reality are probably born already prepared to experience Reality, to succeed spiritually. They are the ones noted for their “hunger and thirst for righteousness”. This hunger and thirst is a lifelong gift, a passion.
Spiritual awakening, as opposed to the mere human improvement sought by well-meaning “spiritual” advice, is believed to be seminal, an intrinsic part of our evolution.
The experience of Reality comes to everyone eventually though not, apparently, necessarily in one lifetime.
Though spirituality is not for everyone yet, finally there are no failures.