It’s okay to worry or feel uncertain, but do not allow it to take over your life.
The only “right” path is the path that feels right to you. You might accept the new job offer and realize that it wasn’t a good culture fit or that there were far more responsibilities than you were prepared to take on.
You won’t always get it right the first time, but when you embrace and accept your mistakes, you become a lot smarter, wiser and more confident about the choices you make in the future.