"Sometimes you have to let people down in order to get on, particularly in showbusiness"

In this quote, Dusty Springfield is highlighting the severe reality of the entertainment industry. She recommends that in order to be successful and progress in showbusiness, one might have to disappoint or pull down others. This might imply declining opportunities or making hard choices that may not align with the expectations of others. Springfield's words likewise indicate that the path to success in showbusiness is not always easy and may require sacrifices. Eventually, she is stressing the importance of prioritizing one's own goals and aspirations, even if it indicates frustrating others along the method.