To get an engineering degree, at least in Sweden where I got mine, you need to take a lot of math classes. Some of those are "hard" to complete. Hard in the sense that you do have to spend a lot of time on the subject before passing the exams. Basically you have to build up a gut feel for what method/variable substitution/formulas apply to the challenge at hand and this takes effort much like getting your body to perform in sports. It won't happen without a lot of effort.
Now, do to robotics you don't actually need a degree although it is beneficial. And even with a degree, the actual maths part of your job is probably not going to be that hard. Or you could get help on that part. Still, why they keep us working so hard in the engineering training program is that training to solve math problems indirectly helps you solve other difficult tasks over the years to come.
Complex mathematics is not intuitive until you have worked on it all those hours. See it as a challenge and embrace it!