Math is about managing your emotions

Recently I have been doing some math again. Mostly exercises for a class I&rsquo;m auditing on combinatorial limits.&#xA;One thing I forgot about math is how most of the time spent doing math is spent feeling very frustrated: why can&rsquo;t I get this problem? I&rsquo;m an idiot. Come on, get it! Etc.&#xA;All the while, your brain is working through the problem somewhere on the boundary between…