I think a natural man would be a carnal man. One who lives according to his flesh. He may appear spiritual. He may talk about looking within and getting in touch with his higher self, and things of that nature. But, as Charles Stanley was saying in one of his sermons he will be looking at nothing, or possibly accidently listening to demonic voices. That is because he has never surrendered himself to Jesus and made him Lord and Savior over his life. He may even believe Jesus was a Master, a teacher like are found in many so called spiritual practices. But, as you probably know by now, those are false teachings.
Also Trust, I see you focusing on evil and darkness primarily, or a lot. Its easy for everyone to get in that rut at times. I don't think this is intentional. But if you listen to the original video (I think its in that video), he mentions that evil is a type of darkness, you can't shoot arrows of darkness at darkness and expect light. You can only battle darkness with light.
When darkness confronts you, repeat the scripture and commit it to memory,
Ephesians 6:12
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places. This means the answer comes through spiritual battle, no other way.
So, first pray to the Father in the name of the one who makes you righteous and washes away all sin, your Lord and Savior Jesus, so that you may approach the father as His sinless child.
Get quiet, ask the Holy Spirit to illuminate an issue that you can't reconcile in your mind. Then be quiet again. You may hear an answer or he may work in other ways by showing you through life circumstances, and more subtle things. But, as Rick says in the video, it is a process. And you can't grieve the Holy Spirit by practicing things continually that you know are displeasing to him (not that you do, I am just saying for myself, you and everyone.)
You can talk to all three persons of the Godhead. They are connected, they are one God. They aren't offended, you can't mess up. God is God any way you go there. Mostly God wants companionship and intimacy with man. And He wants you to become what He created you to be, which is what you will want too, especially when you realize the eternal consequences of this life. I don't mean Heaven or Hell, although of course that. But also the position and place you will hold in Heaven. There are differences for each of us, just like there are differences here.
The video you posted is a New Age video. Can you recognize that when a video exalts humans and the planet in a spiritual manner and never mentions the saving grace of Jesus that something may be wrong there? If it is purely scientific and informational, that's fine but if it presents as a spiritual video then it isn't okay.
I have only good intentions in saying these things. I hope it comes across that way, because I can be overly direct at times. But, I mean it to help not hurt, so I hope it does help you.
Blessings and prayers to you today, and as long as you keep running your race.