If you haven't already done so go to college. LE isn't a job that requires a degree, but since you are being graded against other applicants, you need a degree to be competitive. Study anything you find interesting, most of it is applicable to LE. If school isn't for you go into the military first. If this is a sudden epiphany, you will probably need to make yourself a better applicant and that will take time. If you are like many people you haven't really tried to make yourself a better applicant for LE work. You will be at a slight disadvantage to those who have been working for a LEO position for years.
But when a long train of abuses and usurpations, pursuing invariably the same object, evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new guards for their future security.
Translation for the intellectually challenged: If the government screws the people too much, it is the right and duty of the people to revolt and form a new government.