I have NVLD, and I often feel inferior and inadequate due to my difficulties with math. I am luckier than many NVLD-ers, in that I'm actually very good at algebra. So, I was able to make it through calculus, albeit with many difficulties along the way. The only math I'm good at is pure algebra, but that allowed me to get through most of the math and science classes I needed.
Why I personally feel inadequate is that I'm a scientist, so I wish that I were able to understand higher-level math and physics. The main reason I didn't pursue med school is because the MCAT requires a lot of math and physics. I have really high abilities in many areas, and I wish that my IQ scores weren't so uneven. If my PIQ/math/visual-spatial abilities were where my VIQ abilities are, I would have been able to do so much more science and such, and that makes me sad.
Due to the NVLD, I struggle the most with visual-spatial aspects of math. There really aren't many visual-spatial aspects of algebra, which is why I'm good at it. Algebra is mainly rules to follow and patterns and repetition. Geometry was very hard for me, and trig was next to impossible. Trig was the hardest math for me, since there wasn't much algebra involved and it was all graphing and such.
I'm also lucky in that my visual-spatial abilities aren't nearly as impaired as they were when I was a child. I vividly remember as late as sixth grade not understanding how a heart shape had internal symmetry. In my teen years, I developed the ability to visualize things in 3D to a certain degree, and this is why I was able to get through organic chemistry. When I did my IQ test officially, the neuropsychologist who administered my test said that she and the others were fascinated by me because my visual-spatial abilities were so poor on timed tests, but on untimed tests (like matrices), I did very well. I can do visual-spatial puzzles and stuff when given a lot of time, but my inherent abilities are still very impaired. This is why I probably will never drive. I cannot judge speed and distance and stuff like that.