The correct spelling for the phrase "wast the habit of" is actually "was the habit of." The word "wast" is an archaic second person singular past tense form of the verb "be." In modern English, we use "were" for plural and "was" for singular. The correct pronunciation for "was" is /wʌz/ with a short "u" sound in the middle. It is important to pay attention to spelling and pronunciation to ensure clear communication in written and spoken language.