Pick a project you'll actually use again

A project you build once, get excited about, and never touch again teaches you far less over time than one you keep using week after week. When you keep using something, you keep noticing small ways to improve it, and each of those small improvements is another lesson.

The tools I still use today are the ones I kept finding small reasons to improve, not the ones I built once and forgot. A project that only exists to prove you can build something tends to get abandoned the moment it's finished, because there's no ongoing reason to keep it running or improve it.

Try this today: before starting your next project, ask yourself honestly whether you'll still be using it in a month. If the answer is no, look for a version of the idea that's actually useful to your regular routine, even a smaller one. Building something you'll keep using turns one lesson into many, spread out over time, instead of one lesson that fades the day after you finish.