My biggest realization about doing hard things is that I needed to let go of my intellectual entitlement. Just because something is (or seems) effortless to others, doesn't mean it will be the same for me.<p>Part of this entitlement stemmed from a (now eroded by bitter experience) belief that I'm somehow a faster learner than normal, that _I_ don't have to do the work.<p>For example, about seven years ago I wanted to learn Calc I-III on my own. I went down the usual, lazy, intellectually-entitled route of watching lectures and YouTube videos online without doing a single exercise.<p>A year later, guess what? I couldn't remember jack-shit. Moreover, I couldn't solve problems, which is basically the reason I was learning math anyway. Any bystander could have predicted this outcome, but I was blinded by my own entitlement.<p>Now, after being humbled (here and elsewhere, e.g. in learning to play music by ear), I realize that there's honor, even long-term efficiencies in following every step the great teachers of the past have laid out, in moving slowly albeit with rigor and confidence.<p>I resumed my math study with Geometry 101, the absolute basics, using a book of 5000 (short) exercises. It probably took me three times as long as Calc I-III lectures combined. But I realized something — I found more joy in doing the exercises, in doing things the _right_ way, than I ever had in watching lectures.