"indispensable advice" is correct and usable in written English.
You can use it when you want to refer to advice that is essential or critical. For example: "My professor gave me some indispensable advice before I took the exam."
The 250-page book promises "indispensable advice and inspirational quotes".
The introduction offered indispensable advice for the expectant parent unsure what to call their child: "Some names have developed negative connotations," it warned, "such as Adolf and Myra".
George Miles, the curator of Western Americana at the Beinecke Library, and Bill Landis, the Head of Public Services in Manuscripts and Archives, were particularly helpful and provided McCullough with indispensable advice.
The answers to those and many more questions can be found in the pages of "The Paris of Fashion Insiders: A Private and Friendly Guide 2012," and, just in time for New York fashion week,"The Manhattan of Fashion Insiders: A Private and Friendly Guide," two booklets of indispensable advice she self-published through the McNally Jackson bookstore in SoHo for her friends.
Having dispensed the indispensable advice that when you're good to mama, mama's good to you, Queen Latifah, the rapper, actress and star of the 2002 film version of "Chicago," will become a full-time purveyor of life advice and inspiration on a new syndicated daytime talk show.
Refreshed and decompressed from his recent vacation in Vegas, Ron was eager to apply his Zen-like state to dispensing indispensable advice to troubled souls.
Danny Tinneny proved to be instrumental in the construction of the project, at different times serving as foreman, forklift operator, indispensable advice-dispenser, and genial landlord.
A Bronx friend, who had survived a spinal injury, coached my father through a similar trauma and gave me indispensable caretaking advice.
Within the transformation process, model-based analyses have become indispensable for advice addressing a diverse set of questions.
And he often repeated to me this one indispensable piece of advice: "Never give the uniform back.
FLORHAM PARK, N.J. — Long ago, a wise man gave what Tony Sparano, the Jets' offensive coordinator, deems an indispensable piece of advice.
