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most negative emotions and worrisome situations are caused by denial. people feel an enormous amount of stress because they deny the reality of a situation. they do not want it to be true. they hope that by ignoring it, it will go away or it will not be as serious. but this approach seldom works. when you identify the worst thing that could possibly happen as a result of this problematic situation, you often find thatthe outcome is not as bad as you thought

as가 여기에서 전치사로 쓰였는데, as 뒤에는 명사가 나오는 걸로 아는데, 여기에선 형용사가 나와있네요..
왜 그런지 친절한 설명 좀 부탁드리겠습니다ㅜㅜㅜㅜㅜㅜㅜㅜㅜㅜㅜ