Rationality is the primary virtue so the first thing you will do is have a think about it, and then you will discuss the problem with your friends - you are an Objectivist so you will have Objectivist friends, who are the most intelligent and loving people on Earth
That ought to sort you out, but if it doesn't work then there is some kind of contradiction or inconsistency in your idea system somewhere that you will need to resolve. The problem will either be with you, or with Objectivist theory. Once you have found the contradiction/inconsistency, the next step is to resolve it in some way. How you do this will depend on what it is - it could be purely intellectual, or emotional, or some physical problem.
You will then either realise that your self-interest is served by Objectivism, or you will realise that you no longer believe in Objectivism and are no longer an Objectivist. If the latter, then you will be in opposition to Objectivism and, if the problem is sufficiently serious, you will have to bring it to the attention of others and try to do something about it. But like all problems, you can look forward to some hard work and heroic struggle as you struggle manfully to solve it