当家作主: be master in one's own house -- be in power; be the master of one's own affairs [destiny]: 在我们国家里, 劳动人民当家作主。 in our country the working people are the masters
自己当家作主: be master in one's own housebe master in one’s own house
在我们国家里劳动人民当家作主: in our country the working people are the masters