Spirituality is a practice, and any human being can engage in it, whether in Christ or outside of Christ. What we want to achieve is spiritual transformation with Christ at the center. This means knowing who you are, growing in who you are, practicing who you are, with Jesus Christ, the Son of God, at the center of it all.
Call it mystical theology, spiritual technology or just the fundamental principles of Christianity, but the next 90 days is practicing to engage with the Word of God, engage with the body and blood of Jesus, meditate on the reality of the kingdom of God of which we are a part, live in absolute awareness of the company of the living, who we are connected to, and live in absolute awareness of the angelic structures and spiritual beings established in and around us to aid in our journey to maturity as a son of God.
If as a believer you have ever asked if there is more, then this journey is for you. The simple reality, brothers and sisters, is that there really is more.