Totems are a great way to get a BP boost as they are like mini-achievements that reward you with bonus BP. To find and use totems, you need to explore the game world and look for trees and stones with special markings. Interacting with these objects will cause a totem to appear and you will need to complete a task related to the totem in order to receive the BP bonus. By completing totems your BP can increase significantly, so make sure to keep your eyes open for them!