Lot of good things here, but there's 2 I haven't seen: Learn a new language. In particular, learn one that requires thinking about programming in a different

Lot of good things here, but there's 2 I haven't seen: Learn a new language. In particular, learn one that requires thinking about programming in a different way. Coming from Basic, C, C# and PHP, learning Ruby was a real eye-opener and improved my coding. Find a mentor. Watching someone code who is better than you at some (or all) aspect(s) is a very quick way to polish your skills. Especially if you can ask questions and have them suggest improvements.