Quiting my job

I recently spent $3,500 to become a dental assistant, I got a job within 3 months I used to be a CNA but honestly being a dental assistant I hate it and I've been currently looking for a CNA job to go back to and make the same amount of money but CNA hours are a little better as my dental assistant job I'm working 12-hour days... It honestly just doesn't work for my family... my question here is how do I tell my husband that I'm going back to a job that he absolutely hated..... My CNA job.... I just can't be a dental assistant anymore I hate it.....