Play the music you love, over & over again. Marcus Aurelius 6.11

Remember what works by continually doing it. When things become difficult, or wrong, go back to something good that you are always doing, that you can rely on to be what you need. Your character is the sum of what you do, and the more you do the things that bring harmony to your life, the more harmonious that character will become.

Ὅταν ἀναγκασθῇς ὑπὸ τῶν περιεστηκότων οἱονεὶ διαταραχθῆναι, ταχέως ἐπάνιθι εἰς ἑαυτὸν καὶ μὴ ὑπὲρ τὰ ἀναγκαῖα ἐξίστασο τοῦ ῥυθμοῦ· ἔσῃ γὰρ ἐγκρατέστερος τῆς ἁρμονίας τῷ συνεχῶς εἰς αὐτὴν ἐπανέρχεσθαι.

Whenever circumstances drive you to distraction, so that you become confused, retreat swiftly into yourself and do not depart more than is necessary from your tried and true routine. You will acquire greater power from the harmony in your life if you are constantly returning to it.