Sounds like youre just having doubts about certain Catholic teaching.
Instead of worrying about converting, think about what issues are making you think about other faiths. Do certain questions about the papacy, or Mary and the Saints come to mind alot? Or are they related to issues were facing as a Church such as child sexual abuse scandals, declining membership in some areas, the perception of the Church in the media?
You have to isolate why leaving the Church is coming to mind, first, and why other faiths are entertaining your thoughts. Then address the doctrinal or other issues. But there is no reason not to confront of these issues instead of just worrying about thinking non Catholic thoughts. Our Catholic doctrine can be defended in all cases! And there is no reason to shy away from the sins within the Body of Christ. As the Apostles told Christ when other disciples left due to the “difficulty” of the teaching of the Eucharist, “where else would we go”? Despite the Church’s flaws , which are due to simply fact that the Church is comprised of human beings, there is nothing else that can even compare. As Americans we often hear Winston Churchills supposed quote that “Democracy is the worst form of government except for to all others”. Well, in the case of the Church , there are no sins that could ever make it worth leaving, because there is nothing better. Christ was fully aware of this and still declared that the “Gates of Hell will not prevail”
