"Human beings are capable of virtually limitless degradation; they are also capable of virtually limitless improvement and achievement. Success depends on goals and on diligence in pursuing them."
(Oyama is the founder of Kyokushin, which is the discipline that my teacher and his teacher both originally trained in.)
Anyhow, tonight the promotion begins. As one of the other senseis reminded me today, karateka don't usually wish good luck on such occasions, instead declaring, "Ganbatte!" which is Japanese for, basically, "do your best."
So to me, and to all the other folks going for their black belts tonight with me, Ganbatte!