A lot of this comes with experience. 2 years is not a very long time to have been doing this. The longer you spend time in this sort of environment, the more th

A lot of this comes with experience. 2 years is not a very long time to have been doing this. The longer you spend time in this sort of environment, the more things you'll learn and start to pick up on without necessarily needing to be told. This goes for missing things as well as seeing refactoring etc as "work" - I used to think that too, but I've seen that as people gain more experience, that mindset tends to shift. Over time, you'll realize that it's better to refactor now than later when it will be much more painful. And if you're anything like most devs I know, you'll eventually begin to really enjoy refactoring because of how much more elegant you can make the code. There's something so rewarding about seeing a spaghetti string of code turn into a beautiful work of art before your eyes. Another thing I'd like to note that I think is really important here is that having others review your code is a powerful tool. Even after many years of experience, I still get lots of comments on some of my PR's and you know what? That's my favorite thing to see! It took me a few years to realize that getting comments didn't mean that I was doing a bad job, it just meant that someone had caught something and there was something I could learn! In fact, I start to get nervous when I don't see people commenting on my PR's because it means that I'm shipping code that could have probably been improved. It's also not just "smarter" or "better" programmers who are able to leave good, thought-provoking suggestions/thoughts on a PR that help the author learn something and improve their code. I've had juniors leave comments that taught me something or reminded me of something that I've missed, and I've also reviewed my manager's code many times and explained something that he didn't know - and he's told me the same thing about having reviewed HIS manager's code years ago. The fact that you're already trying to be careful and diligent is awesome, keep that up. Just don't feel like you're not doing a good job just because you're not catching everything - that's the whole point of the code review.