"No, you don't want to make sure you're doing everything in the fastest way possible. That is called premature optimization and will make your code unreadable and unmaintainable in addition to being a giant waste of time. You do want to figure out where your bottlenecks are and optimize those as much as needed. Otherwise we'd all be coding in assembly." - wise man
I'd also add that unless you are measuring performance, your premature performance optimizations may just be premature mess making.
SUNDAY is a truly independent self-financed feature film set in Christchurch, New Zealand one year after the devastating earthquakes. While it is not an earthquake film, it is a story like the city of Christchurch: one of past devastation, beauty and a chance at rebuilding bigger and better than before.