Apart from the worldly achievement, What should be the ultimate goal of a human being?

Dharama, Arth, Kaam and Moksha. Dharma means your purpose for which you are born. Artha means to skillfully utilise and harness the resources at your disposal. Kaama is the satisfaction and pleasure you derive and finally the moksha which is the detachment one should cultivate after completing your Dharma, Artha and Kaama.