Even if you were extremely talented, extremely dedicated, had the best possible coaching, and started young - statistically speaking you most likely would never become a world champion. It's hard to find exact numbers, but there are probably 25,000 - 30,000 professional boxers active in the world and many, many more amateurs. Only a handful of those will ever become world champions.
If you put aside that focus for the moment, there is some good news.
Talent is not the limiting factor for most people. Very few people in the world will ever reach the limit of what is possible with their particular natural talent and genetic gifts - in any field. Time, dedication, consistent hard work, open mindedness, good coaching, and an intelligent approach to learning and improvement make a much bigger difference.
Part of that intelligent approach to improvement is focusing on achievable goals based on where you are right now. If you are brand new to boxing, your immediate goal should be learning fundamental skills so you can safely spar. If you are to the point where you've learned the basics and are sparring well, then your immediate goal should be sharpening your skills and fitness in preparation for your first amateur fight. If you are already competing at an amateur level, then your goal should be to learn from the fights you've had what aspects of your game you need to improve in order to win more fights. If you are competing successfully at an amateur level locally, then you should focus on what you need to win at higher levels of competition. If you already have a strong amateur record, you might consider going pro, taking into account the differences between amateur and professional boxing, if you have fought professionally, then you need to focus on the lessons learned from those fights in order to win more and find higher level opponents. Only once you are already competing at a very high level do you really need to start concerning yourself with a path to a world championship.