Regulating stress does not help

Who said this statement, "What does not kill you makes you stronger"?

Extremes of happiness or sadness serve as testing times to return to bad habits.

It is easier to break free from good habits than bad habits.

Identify the habit of success among the following.

Practising good habits facilitates cultivating habits of success.

Which of the following is/are not trait(s) of a successful person?

A bad habit cannot be stopped by

A long-duration project can be completed by

How many general classifications exist for engines?