At some point in time, I wasn't sure if I can find something I was going to be happy doing.
It really took some time and effort to find something that I truly enjoyed doing. Eventually, I settled on a single major that seemed realistic. Speaking from personal experience, I feel as if people who feel lost or that they don't belong in their major do not take into account their true capabilities, their motivations, and what they're actually good at. Being able to recognize what you really want, how hard you are willing to work for it, and what you are willing to give up for it is important when it comes to declaring a major.
But interests change over time. An individual is bound to change within a span of four years (three, if you're ahead). This, in turn, can compel any college student to want to change majors. I think the most important thing to take into account is time. If it were up to me, I would've changed my major about five times. But, switching majors and different colleges within UofI can be sometimes such a complicated process that takes a lot of time and planning. More importantly, if your goal is to graduate in four years, switching majors in your junior (and even your sophomore year) will end up in you spending another year at university.
Ultimately, it is important to talk to your advisor about this in order to properly plan for the future. And for more efficient planning, make sure to access and enroll in classes based on your requirements which can be seen in your degree audit. This can be accessed through the self-service website, as well as my myIllinois website.