We are a generation who wants our lives to have "purpose" and our work to be "impactful". It's a wonderful goal to have, but not entirely a S.M.A.R.T. (Specific, Measurable, Attainable, Realistic, Time-bound) one to have. The problem with adopting this phenomenon as a mantra is that we, as a generation used to instant-gratification, easily lose interest in things that do not seem to have an immediate impact or positive result.
I say this here with good reason. In the U.S.A. the undergraduate degree is extremely flexible (some would agrue, too much so). One outcome of this is that students often find themselves conflicted whether they chose the "right path" or not, especially more so due to the ability to change paths so easily.
"Follow your passion" - a seemingly harmless piece of advice that can wreck havok to our mental wellbeing. How in the world are we supposed to find that? Especially in engineering, where the majority of the first year education involves solving double integrals and determining whether allylic carbanions are more stable than methyl carbanions (to those of you who wanted to never hear these terms again in your lives, sorry).
My piece of advice to you is to temporarily throw the question of passion in the trashbin during your freshman year. It is extremely rare for any Engineer to claim that he or she loves engineering. It just isn't common. You may love aspects of the major, but until you start working or applying the knowledge you have in some manner, you will probably despise it to an extent. Unlike a doctor, our application of knowledge as impactful isn't as tangible. Your contributation may be small at first, but without the small parts working well, our inventions would soom fall apart. This delay in satisfaction is why so many students drop out- is the effort worth it in the end? Only you can decide. But don't take a rash decision in the middle of the worst part of it. Freshman year is supposed to weed out students who are unwilling to put in a little effort. Wait it out and decide in your second year of school, as it is much harder to get into engineering than it is to get out.