Agreed. In the past, I've made it my goal to use one (and no more than one) new tool for each project. Whether it's the web framework, database, version contr

Agreed. In the past, I've made it my goal to use one (and no more than one) new tool for each project. Whether it's the web framework, database, version control system, javascript framework, etc, I make myself learn one new thing. That way I'm still mostly productive, and I don't get frustrated and unproductive due to having to learn so many new things all at once.