Find something interesting. Also find something that involves a particular skill/training that will keep you employed. Pick a skill that won't be a fad/temporary. That could be anything: tech, trades, white color, etc... Generally, you want to find a profession that requires some degree of licensing and a multi year training program.
Nothing worse than applying for work when you have no specific skills to set you apart. Being part of the general labour pool is no fun, particularly when you're middle aged. When you don't have skills you'll also be at the mercy of vindictive middle managers.
Employers, like girls, want skills: