Belief is what the more advanced huts produce, and it the in-game currency that allows you to change the land as desired. Only sculpt land that you will immediately use to conserve Belief. You will eventually have to start working on higher ground, and this requires a lot of forethought. When collecting Belief from homes, there is no need to tap them individually. Tap and drag over all of them to collect Belief efficiently. Log in as often as possible to collect the available Belief and make room for more to accumulate. The starting houses cannot hold too much of it. You can earn some extra Belief by removing rocks and trees. You can also spend Gems to speed things up and get a boost in your Belief production.