ἀνακρουστέον
From LSJ
Τὸ νικᾶν αὐτὸν αὑτὸν πασῶν νικῶν πρώτη τε καὶ ἀρίστη → The first and best victory is to conquer self.
English (LSJ)
A one must check, X.Eq.10.12. II ἀ. τὸν λόγον put back for a fresh start, Dam.Pr.85.
Greek (Liddell-Scott)
ἀνακρουστέον: ῥηματ. ἐπίθ., πρέπει τις ν’ ἀνακρούσῃ, νὰ ἀνακόψῃ, νὰ σταματήσῃ, Ξεν. Ἱππ. 10. 12.