Job 9:27 Halakhah

אִם־אָ֭מְרִי אֶשְׁכְּחָ֣ה שִׂיחִ֑י אֶעֶזְבָ֖ה פָנַ֣י וְאַבְלִֽיגָה׃

If I say: ‘I will forget my complaint, I will put off my sad countenance, and be of good cheer’,

Read halakhic rulings (Jewish law) on Job 9:27: and classical halakhic sources.