self-anointed       
adjective [ before noun ]  usually disapproving (also selfanointed) uk/ˌself.əˈnɔɪn.tɪd/ us/ˌself.əˈnɔɪn.t̬ɪd/
 自我圣化的
Someone who is self-anointed has decided for themselves that they deserve a particular important or powerful position. 
  She is now a self-anointed soldier in her country's grass-roots green revolution.
 In the show, self-anointed experts parachute into crisis situations and whip everyone into shape. 在节目中,自命不凡的专家空降到危机局势中,鞭策每个人恢复常态。 
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 - Investors should be extremely wary of expensive seminars where self-anointed gurus imply you can get rich quick.
 - He is on a self-anointed mission to purify the party by taking power from the governing class and returning it to the people.
 - This self-anointed messenger of God spends most of his time raising money from his supporters.