“But if we walk in the light, as he is in the light, we have fellowship one with another.” (1 John 1:7). To have fellowship with another at all times, WALK IN THE LIGHT! Do NOT seek the other; seek Him! By following Him, we have fellowship one with another!
Anything can be spiritual wickedness set up against knowing God – pursuits, friends, books, internet, emails, games, sports, school, work, recreation, hobbies. If He wants us to do it, He will lead us in it. These are defined spiritually as things that get in the way of knowing Him!