What I have noticed is that students starting out in math, physics, or engineering are usually scared of differential equations. I know I was when I was starting my engineering courses. The trick with differential equations is that the complexity is all in your head. Just because you see some squigglies and squagglies and a bunch of math and so on you say, "Oh, that must be hard." Differential equations are actually the simplest thing there is because in a large majority of cases the way you solve them is you assume you know the answer. So someone tells you the answer and then all you are left to do is shove the answer into the equation and find out the constants that make it the answer. It's just a matter of psych. You should psych yourself that differential equations are easy because you're given the solution! You just have to plug it into the equation and verify.