The correct spelling of the phrase "wast of one mind" is actually "waste of one's mind". The first word is spelled with an "e" to signify the action of discarding or consuming something without purpose, whereas "wast" is an archaic form of "was" and refers to the past tense of "be". The apostrophe and "s" in "one's" indicate possession. When pronounced in IPA phonetic transcription, it would be /weɪst ʌv wʌnz maɪnd/.