[請益] 請問這一句是虛受詞嗎

[leniency (leniency)]

Although the excessive nature of OCD can make it hard to overcome,

there are still some tips to keep it under control.

想請問第一個it是虛受詞嗎? 還是單純代名詞罷了。先謝謝大家的回答。

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推 sadlatte: 應該就是指OCD吧
推 negocios: if pronoun, then itself?