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If you have commited a crime, you are виновен. But you are сам виноват that you are in prison because you have commited a crime.

(я) виновата сама: it's (exactly) my own fault.
(ты) виновата сама: it's (exactly) your own fault.
(она) виновата сама: it's (exactly) her own fault.

I'm guilty - Я виноват(а).
It's only my...

BolshoE spasibo vam!

I'd translate:
Paradise is a place where there are no (any) Mondays, bosses, and alarm clocks.