[I]t would be a serious mistake to take the teaching of the “attainment of Buddhahood in this life” as meaning we can attain enlightenment without any effort. Even if we believe strongly in a religion, we must still practice it and apply its principles to our life. But by the power of their faith, ordinary people can attain the power of the Buddha without first completing difficult studies and practicing for eons and eons. This is what is meant by the “attainment of Buddhahood in this very life” [in Chapter 12, Devadatta.]