Idk what to do with my life, help

I’m almost 21 years old and a SAHM since I graduated high school. My fiancé works, and I’m ashamed to say I’ve never had a job. Once our daughters in school in the next year or two, I need to work obviously. I just have no idea what to do. I love writing but I know it’s hard to make a career out of that. I was thinking cosmetology school but not really sure right now, I just feel so up in the air about my life and I hate it. Any advice/stories appreciated 😔