The idiom "head-on" refers to facing a situation directly and without hesitation. It means approaching an issue or problem with a clear and determined attitude.

The idiom "die hard" means to be extremely stubborn or resistant to change, especially when it comes to personal beliefs or opinions. It can also mean someone who is very determined and persistent in their efforts.

The idiom "dog and pony show" refers to a display or demonstration that is designed to impress or deceive others rather than providing useful information or genuine insights.

The idiom "on a roll" refers to a person or thing that is doing well, succeeding, or progressing smoothly. It can also refer to a state of excitement or enthusiasm.

The idiom "wrap in cotton wool" means to treat someone or something with extreme care and attention, often going beyond what is necessary or appropriate. The phrase connotes a level of protection and pampering that is designed to create a sense of security and ease.