If you feel compelled

to say the same thing others have said (i.e., a cliché), the key point to convey is why the advice did not previously connect with you. This is the valuable insight. Generally, this insight will demonstrate that only part of the story is contained in the cliché, the part that belies the difficulty of adhering to said cliché, or the part that admits of no tradeoffs, even though there are always tradeoffs.