hi, just saw this thread.
the oriental orthodox churches teach, quite 'simply' that a high spiritual state is reached through prayer, fasting, the sacraments and living a holy life. so there you go, just pray continually, always partake of the sacraments and attend church, fast regularly for a number of years, flee from all evil in your thoughts and deeds, develop a close relationship with God and you're sorted.
this is one extract from an english translation of the arabic version of homily 17 of saint macarius ('macarius the great' who lived in 300s):
Like open eyes which can clearly see the sun, also the mind that has been fully sanctified can clearly see the glory of Christ and unite with Him, day and night, in the same manner of the unity of the Body of Christ with the Holy Spirit. People do not reach those levels in a moment but only with much labour, temptation and struggle.
so we allow for the individual guidance of one's priest / spiritual adviser on the practical details of how to get there. eg. for the 'rich young man' in the gospel, there was a need for him to give away all his riches, the woman caught in adultery had to 'go and sin no more' etc.
may God guide u in your search, and pray for me too, a fellow traveller.