You do have the time. You're already documenting your work (comments, e-mails, actual documentation, commit messages, and so forth) and telling people about what's going on. Blogging isn't much different. What you might lack is the discipline to publish it where you and other people can find what you've written. But you get that discipline through practice.
My blog isn't entirely technical (I'm over halfway through my career, so I have other priorities), but every Monday is a "developer journal" going through the things I've been working on (sometimes with code samples), and when I've learned something, my notes become a Wednesday post. An occasional other post is sparked from conversation on sites like this.
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You do have the time. You're already documenting your work (comments, e-mails, actual documentation, commit messages, and so forth) and telling people about what's going on. Blogging isn't much different. What you might lack is the discipline to publish it where you and other people can find what you've written. But you get that discipline through practice.
My blog isn't entirely technical (I'm over halfway through my career, so I have other priorities), but every Monday is a "developer journal" going through the things I've been working on (sometimes with code samples), and when I've learned something, my notes become a Wednesday post. An occasional other post is sparked from conversation on sites like this.