That's a very nice that you are asking for an opinion as you might feel uncertain for the choices ahead of you. However, you shall not forget that this topic is relative for each one of us and in the end of the day it is you the person that will take the decisions and consequences. It seems to me that you are wondering around as you don't know neither what you want to do nor how you will do it.
Some of us seems to have it figured out, whereas some others struggle with it...and it is normal, maybe you still haven't experience work that is meaningful, that will motivate you enough to start off your day. Nevertheless do not forget that time is the most precious element and as sooner you start the "process of knowing yourself" as better. This doesn't necessarily mean that you will have it all sorted out...no one does! At least you will be on the right track .
I would suggest you a very simple task, take a pen and paper and write 10 positive traits that you have and 5 traits that you need to work on, 10 things that you love to do, 5 things that you will never like to do. Take another paper and write down 5 dreams, everyone has dreams, even better if those are dreams from childhood, compare these papers and make a list of goals. I would recommend you working in daily and monthly goals. Write your goals and stick those papers in the wall.
With or without college you need a plan in mastering your skills, that is how you become successful. You need to know what is your value proposition and how are you marketing yourself. If you decide to pursue a degree it is essential that you chose the right major that fits your character and that will contribute in your achievements.
If you would ask me personally, I would say that college is necessary in becoming successful, because that is how it worked for me, I needed education to discover different aspects of my self, and I still need further education, but again I personally know very successful people without a college degree. Choose a path that you love and it challenges you in the mean time...there is where success hides. Over and above, success is not defined the same for everyone, for some success is only money, for others success is fame, family, philanthropy,...etc
but what is success for you?