I am about to be 50. Thinking of going to school (eventually law school). Am I

I am about to be 50. Thinking of going to school (eventually law school). Am I being realistic? Have only had a few classes. Never took the ACT. 1 daughter is a senior in college now, youngest start next year. They are my 1st priority. My present family business (30 years) is in bad shape. I am also a Realtor. My marriage is shaky because my H seems to resist getting a job. He will freak if I tell him I am thinking of going to school, my daughters think its a great idea. It will take a long time but I am at a turning point in life & I think I would enjoy law. I don't expect my H to support me. I am at a crossroads & I need to do something. I naturally think I might be too old & have too many responsibilities for this type of venture. Anyone else been here?