You can say or think you desire something, whether you really do or not. Your feelings are an indication of what you really desire. How often do you find yourself wanting what you believe is bad? How often are you unexcited or even repulsed by what your beliefs indicate is good? You will only feel bad about what you claim to believe is good or good about what you claim to believe is bad when you don’t really believe what you say you do. You either need to be more honest about the evidence you’ve seen in favor of your current beliefs, need to find stronger evidence for your current beliefs, or you need to find new beliefs.
If you are honest, what you desire and by how much is informed by your beliefs. When you are honest, you desire what you believe is most valuable. Do you ever complain while in the path most likely to yield what you say you want? Do you find yourself doing something other than what you feel is most important? These are all signs of a mismatch between your beliefs, actions, and desires.
If you find yourself preoccupied with something, investigate whether there are actions available to you that would affect the outcome, and whether those actions or the changes they cause are more important than whatever you might do instead. If no actions are available to affect a change, or if those actions or their expected outcome are a lower priority to you than something else, the only honest thing you can do is focus on something else instead.
Focusing your concern on the most important things you can actually change so extensively improves your outcomes while limiting your stress that doing so cannot be recommended highly enough.