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determined purpose
an incredibly short span of time (i.e. the time occupied by a single thought)
a single repetition of a prayer (esp. in Jodo-shu)
仕事を失った彼は、一念発起してパン屋を開いた。
After losing his job, he resolved with determined purpose to open his own bakery.
母の一念が、彼女を支えた。
Her mother's determined purpose supported her.
彼は一念を貫き、職人としての道を歩んだ。
He held on to his determined purpose and walked the path of a craftsman.