Yes, but YOU need to decide what you might want to do with the rest of your life. Different people decide this at different points (I was a bit later than many) and, of course, peoples’ ideas change over time but, like many have said, if you can find something that gets you fired up, that’s a good starting point.
Some qualifications (Maths, English etc) through a college would probably be a good idea. Our nearest college has a whole bunch of options for people with no formal qualifications so maybe start by talking to yours?.