It could be something good & bad at the same time in my opinion. If you are in the middle of learning new things, then over engineered is good. There's no 'too much' when in the process of learning something. The more you know, the better you gonna get. 

So that's where I'm right now. If I always just gonna feel like it's enough. Then, I won't get to learn a lot of new things in depth. And do it correctly. Instead, all my work gonna be left like just enough. That's why I put all my efforts when doing something. Even when learning new things. So when the time comes for me to build a website, I want it to be a very awesome website than just a website.

Anyway, this is just my way of doing it. Yours could be different. My advice would be, learn at your own pace. You're not competing with anyone else but yourself. So be yourself and embrace it dearly :-)