1. Doing one's duty with detachment - the mind is trained to detach from the results of one's action and not attach positive or negative associations to it, thus weakening the ego and leading to enlightenment.
2. Self-enquiry and awareness - Pursuit of knowledge, and understanding of your own self in relation to the world to achieve a heightened consciousness of how you perceive the world through your senses, leading to liberation of the self.
3. Meditation - Related to 2.
4. Devotion - Loving devotion and surrender of self to a God leading to enlightenment.
Which one does Orthodoxy fall under? (Sounds like 4).
The door is always open. Please check out: https://www.provingislam.com/
I listened to the Bible lectures that Jordan Peterson made several years ago, and I was intrigued because I had never heard anyone putting aside the historical story of the Bible and instead focusing on its relevance from a neuroscience point of view. This led to me eventually finding the work of Jonathan Pageau. He's an Orthodox icon carver, and he talks about the traditional worldview, how to understand the Bible from an ontological point of view (a hierarchy of being) rather than from a "scientific" or empirical point of view. It took a year or two before I really started to understand what he even meant, but once I started to understand that way of looking at the world, my whole world changed and I quickly joined the Orthodox Church.
To be more specific, I would recommend finding an Orthodox Church local to you, and just go see what it's like. Introduce yourself to the priest after the service, and he would be happy to talk with you and helping you begin to see the Orthodox way of life. The Orthodox approach focuses much more on your relationship with God, rather than a list of checkboxes of do's and don't-dos. It's very participatory. It demands a lot from the followers, but the sense of meaning, being, and purpose that have replaced my old sense of nihilism, meaninglessness, and despair...I can't even put into words how much my life has changed.