I asked this question on how is someone supposed to know their own varna. It got closed because it was deemed opinion based.
However, is the decision that this question is opinion based not an answer to the question itself? If the methods used to classify your own varna are based on opinion, you cannot be sure you are right. Thus, it is best to not list your own varna and let other people decide for themselves based on your actions. Surely the people who deemed this is opinion based should show how they came to this conclusion as an answer, because it would answer the question (as no you cannot be sure).