Expressions (phrases, clauses, etc.), Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no', Noun
1. paying for one's mistakes; getting one's just deserts; suffering the consequences (of one's own actions); reap what you sowYojijukugo (four character compound)
A person, who has repeatedly made slanderous remarks on other people’s sites, is now angry because similar demeaning remarks have been made on his site. I think he made his own trouble. In other words, his suffering is self-inflicted.— Jreibun