Yes college is hard, lots of math and theory. Well worth it in the long run. I don't know what you'd earn a year where you are, but in the US (New Jersey specifically) you would earn about $55,000 right out of college and could see salaries approaching $90,000 (or more) in a few years depending on the industry.
I worked in the defense industry for a while, loved the work, very precise, everything had to be perfect. Now I'm an R&D Engineer for a medical equipment manufacturer. More money, got to travel to Europe on business trips, but bigger headaches.
Don't let a few years of hard work in college sway you away from being an engineer.