That is it.

karmaṇy evādhikāras te
mā phaleṣu kadācana
mā karma-phala-hetur bhūr
mā te saṅgo’stv akarmaṇ

You have a right to perform your prescribed duty, but you are not entitled to the fruits of action. Never consider yourself to be the cause of the results of your activities, and never be attached to not doing your duty.

~Bhagawat Gita