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Coding style (do more, then simplify)

I'm a CS student and I have been coding for a few months shy of a year now, and I seem to have developed what I think may be a "bad" habit and I'm wondering if anyone does the same (or whether it's a bad habit at all). When I'm coding / solving a problem with code, I find that my initial implementation is lengthy and overly-complicated; in other words, there is a lot of extraneous code (variables, checks) that is simply not needed. When I finish the initial "draft," and make sure the code actually works, I simplify it and make it easier to understand/less verbose.

I think the reason I do this is that I have trouble foreseeing what I will need to complete a task and end up over-compensating and creating complexities that should not or need not exist. Anyone have any tips or advice on how to improve this facet of my coding style, or any input as to whether the habit is actually a bad one?