Starting an online business is simply the best way to get back your freedom and live life on your own terms. It is usually also the only way that can lead you to your goals, as even an high-income job will always limit you in terms of income.
Indeed, it allows you not only to work on what you are passionate about - and not on what your boss tells you to do - but also to work whenever you want, wherever you want. And even if you don't plan to quit your job just yet, I'd still recommend starting your own activity online, as more and more companies are firing employees those days. I'd even argue that starting an online business is much safer than having a regular job, as creating income depends solely on you and not on someone else that can fire you at any moment.
I know that the thought of starting your own activity can be daunting, especially because we usually associate it with launching a big startup like we see in the media. Well, it's very far from the reality (unless you want to create a big startup, which is perfectly fine!). Indeed, it is really easy those days to start generating income right away, for example by doing consulting work (which is what I did when I started out). Or to sell online courses to an audience, as there are very to use tools that allows you to have your business running very quickly. Whatever you choose - this page has the best resources to help you get started!