What does it mean to know yourself?

Question: In your khutba you said to have manners and to know yourself, can you explain what that means.
Sheykh Lokman Efendi Hz
Khalifah of SahibulSaif Shaykh Abdulkerim el Kibrisi (qs),
OSMANLI DERGAHI- New York
20 Shawwal 1438
July 14, 2017
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[@munajmursheed1238]

I have been following Islam for 25 years this is the first time that opened my eyes to the way... may Allah bless you sheikh

[@shamimahmadshamim3724]

Valueable teaching of sufi mudlim

[@redseantlworld]

Amazing Shaykh. ☺

[@nadimbaksh5988]

Salaam I was so shocked used to have a soft spot for sufi they all teach you your so called sheik has these secret ways to get to Allah.All shirk beliefs insufism not Islam as taught by our beloved prophet Muhammad phuh.