What is the ruling on the supplication: "O Allah, help me to remember You, thank You, worship You well, and obey You"?

The supplication "O Allah, help me to remember You, to thank You, and to worship You in the best manner" is authentically reported to be recited after prayer. There is no harm in adding "and to obey You," but one should not persist in doing so, as it is not authentically reported and does not add any new meaning, for obedience is encompassed within worship.