Consider this sentence:
Your self-confidence, resilience and adaptability , all will help you integrate in this new competitive environment.
My question is about the comma before all. I tried to find a rule about using a comma after an enumeration that is "repeated" by all at the end, but I could only find rules about all as a pronoun in different structures, not in an enumeration.
I personally feel that a comma should be used before all, to reinforce it as a replacer of all that precedes. I feel this is not the same as sentences of this type, They all agree.
Particularly, I am less interested in the use of the comma, that can be opinion-based. I want to know whether all is used in this sentence as an apposition. Or is the enumeration that precedes all, Your self-confidence, resilience and adaptability, a case of apposition at the beginning of a sentence?
I only gave this sentence as an example, I would be very interested in literary or formal style, too. Basically, the structure I am after is
X, Z and Y, all + Verb + etc.
Is "X, Y and Z" an apposition? Or is "all" an apposition? I am looking for grammatical explanations of this issue (didn't find any in the CAGEL).