[wmu]

I like this joke: A junior programmer thinks he knows everything. An intermediate programmer thinks he knows nothing. A senior programmer hates computers.

> But I feel like I'm always a step behind the rest.

Don't look at things in this way, low self-esteem is the worst you can get. There are always people better than us, but their skills and knowledge weren't conjured up. Even extremely talented people need time to learn. And if you don't feel like learning new things may make you better, why to feel guilty? If you're not a Java programmer, why to feel bad because you don't know Spring or other details perfectly? You wrote you do things fast and correctly. So you're better than, say, 90% developers who work slow and produce crap. :)