Punishment In Case Of Not Following The Uswa-e-Hasanah Of Prophet Muhammad (sws)
You need to define Uswa Hasna. To us, uswa e Hasanah is the best way to perform religious duties and moral values. One is not compelled to meet that level of the Uswa in every act however one should try to meet it. But if one is fulfilling his or her obligations and is not immoral, he is technically a good servant of God and he will not be answerable for not performing his duties and other moral acts at the level of uswa e Hasanah
If your question is about the habits of the prophet then it is the matter of one’s choice and Zauq to adopt his habits too as the affiliation with the person sometimes urges.