Oh the resentment is perfectly natural, but it's pretty easy to overcome. It's like skipping the third beer or not buying the chocolate bar when you walk past it.
This is quite common in the current us school system where children are routinely pitted against one another for the love of a proxy parent, aka teacher.
But you rinsight is still valuable: if you have difficulty getting over something, then remind yourself that you are being a like a drunk.