You know how bad people feel after they go on Facebook and look at how beautiful their friends' lifestyle is, without realizing it's all fake? Well, that's how I routinely feel when I browse HN, except that the work on HN is not fake, is way too real.
I see people posting brilliant work, work that is very much related to my field and that I should be able to come up with myself, and instead I barely comprehend.
It then gets worse: I navigate to their personal blog, and find hundreds of incredibly well-crafted articles about a wide range of topics. For example, just today from a front HN link I jumped to a personal blog of an engineer who was writing impressively deep thoughts about unit testing, dependency injection, Go, Java, hardware, architecture, backend, frontend, performance, ... Very, very thoughtful posts. I would not be able to reflect so deeply on those topics, even if I am relatively familiar with them. I have no other choice than believing I am stupid, at least in comparison to such person.
It then gets worse one more time: I look them up on LinkedIn, infer their age and see that they are younger than me, and that they were holding a demanding full time job all along, while writing those incredible articles and producing that amazing work on the side.
And it's not even that I could work harder. I literally cut 90% of my recreational activities: I don't have a TV, I don't watch Netflix, Youtube, games, I completely ignore news, I don't read novels, I don't have kids to take care of, ...
Every day after work I read technical books/articles until I go to bed. The only things I do non-related to my professional development are going to the gym regularly, and spending quality time with my girlfriend a few hours on weekends. But, I would say that on a given week I routinely put 70-80 hours on my professional development (including my full time job), so I couldn't do more than this without it affecting my mental and physical health.