One of the more complicated things an independent engineer such as myself has to deal with is, perhaps surprisingly, logistics. Pretty much all of my projects are dependent on international shipping, as the components they require just aren't available locally. Normally this would not be a problem, as I can generally predict how long everything will take and act accordingly, but recently all shipping has been random at best. To give a concrete example, I've never had an OSH Park order take more than 3 weeks, from submission to reception. Now it's easily six weeks or more. And there are a lot of cases such as that. Actually more than half of the tools I've needed to buy recently have taken more than a month to arrive. But that's okay, I'll adjust. But it does lead to an evergrowing backlog of stalled projects, when I put something on pause due to lack of parts or tools and start on something else while waiting. On one hand it feels like I'm making great progress with so many things at once. On the other hand, I'm afraid of getting in trouble with a deluge of projects and to-do items when things start getting to normal. Which is a great chance to improve my project management skills.