"People are impressed with me - because I can sleep for just 45 minutes - I'm used to it"

Miley Cyrus is implying that she has developed a skill that lots of people discover excellent. She has the ability to get by on only 45 minutes of sleep, which is an accomplishment that many people discover hard to achieve. This recommends that she has trained her body to be able to operate on less sleep than the average individual. It likewise implies that she is a difficult worker and has the ability to handle her time effectively. This quote might also be interpreted as an indication of her ambition and commitment to her craft. She is willing to sacrifice her sleep in order to pursue her goals and make her dreams a truth. This quote is a testimony to her determination and resilience.