The problem with this advice, is that it assumes one understands the 'dance for death'.
It is impossible to understand what this means unless one has had a personal appointment with death, which is not an easy arrangement.
Many people have had this appointment by sheer bad luck, so they are a step ahead of the rest.
The dance for death is a situation we find ourselves in, where we realise we are facing death in a real way - not just conjuring it in our mind. And even then we have to realise that no matter how many people may be around us, there are actually only two beings present: ourself and death.
It is in that moment we see that every movement we are making is witnessed by only these two, and is precious to only these two. The outer world collapses, and it dawns on us that in life, there are only ever two beings watching, and they are both us.
A man asked Nasruddin when the world would end. "When I die." he replied.
"But the world won't stop just because you die." responded the man.
"It will for me!" said Nasruddin.