As obvious as it seems, the advice really does apply to everything. I'm okay starting a bunch of projects and never finishing them, because I'm always learning

As obvious as it seems, the advice really does apply to everything. I'm okay starting a bunch of projects and never finishing them, because I'm always learning something. When I do start a new project, I usually try ten or so different programming languages and environments to see which one is a good fit for the project. That said, there's certainly something to be said for finishing projects that you're proud of and getting to know one toolchain very well. A mix of both is good.