That building never happens. 1 month later my portfolio is nonexistent, there are no projects, and my blog is a figment of my imagination. And right now I'm in the process of learning yet another framework.
So I've been thinking: This must be something worse than what I imagine. I read about perfectionism, fear of shame and judgment... bingo. I can tell that the root of the problem isn't that I can't work on a personal project, because I do have them. But the moment it's a portfolio project the question isn't "what would help me learn?" but "what would help me demonstrate to my future employer that I deserve a chance?"
This is a behavioral habit, a disastrous one and potentially career-ending or at least progression-ending. And it may have started with me trying my best not meet external expectations or minimize my footprint to avoid being exposed to bullying, trolling, nickname calling, ever since I was a little kid. And that seed didn't happen overnight, it took a lot of daily conditioning to turn a child from risk-taker to risk-avoider.
That's why I'm wary of giving the advice to beginners "just start building projects". It's not that the advice is bad, but there's just too many factors at play and failure to do so is not always about one's intelligence.