First, your mom means well, and wants to make sure you have a decent life.
That said, you'll have a better life if you like your job.
Cooking might be it, or it might not, and I'll echo what others have said. Get a job in a good restaurant kitchen. Even if it's cleaning pots and pans, storing the food and running errands, it doesn't matter, as long as you get to see what's really going on.
Several of my friends have been cooks and chefs, and by the time they're in...