Is It Impossible for Full-time Homemakers to Live with Confidence?

I’m a homemaker in my 50s. I have a family of four — my husband, our son who just graduated from high school and our junior high school daughter. Since getting married, I’ve never managed to hold down a part-time job for more than a year, largely due to my own lack of perseverance. Honestly, I have absolutely no confidence in my ability to work.