When Common Core math came out and people were up in arms against it, I wanted to know what the big deal was. I researched it, read that it makes mental math easier, and deciding to learn/practice it myself.
I understand the parents who struggled to help kids with their homework, since they weren't taught the same way and if you're just thrown into it, it's hard to figure out. Though how it turned into this big hullabaloo was an extreme reaction. Mental math has become very easy for me since learning it, which makes me think many of us missed out on a method that could've helped us a lot.
So, no, I don't struggle with math. What I struggle with is the confidence to believe I've come to the right answer. I usually do math calculations more than once because I doubt myself. My first college mathematics professor gave me a reality check about it once, as he was getting frustrated that I wouldn't put my hand up even though he knew I had figured out the answers. I can still see him standing there, going, "Come on, Whats_Your_Reasoning, I know you've got it. What's the answer? Just say it!"