self-imposed
adjective uk/ˌself.ɪmˈpəʊzd/ us/ˌself.ɪmˈpoʊzd/
自己决定的；自己规定的
decided by yourself, without being influenced or ordered by other people
The end of the year was their self-imposed deadline for finishing the work. 年底是他们自己提出的完成工作的最后期限。
After the military coup, the family left for self-imposed exile in America. 军事政变后，这家人出于自愿逃亡到了美国。