Bhagawad geeta: 4-39
Śhraddhāvān labhate jñānaṁ tat-paraḥ samyatendriyaḥ jñānaṁ labdhvā parāṁ śhāntim achireṇādhigachchhati
One with devotion attains knowledge and shall be able to regulate the senses. By gaining the right knowledge one shall be able to attain supreme unending peace.
Bhagwad geeta: 2-47
Karmanye vadhikaraste Ma Phaleshu Kadachana, Ma Karmaphalaheturbhurma Te Sangostvakarmani
You have a right to “Karma” (actions) but never to any Fruits thereof. You should never be motivated by the results of your actions, nor there be any attachment in not doing your duties.