Absolutely this. You can also use a tool like Gitstats (if you don't use Github) to track your progress. A lot of my code is written inside thirty minutes on the bus and tube on the way to work. Sometimes you might feel like there's no point even pulling the laptop out of your bag since the time window is too small- but every time you will surprise yourself with how much you manage to get done.
The best thing about the 'little and often' approach is how you get drawn into fixing something big just by starting to fix something small. Getting into The Zone for hours at a time is great and everything but honestly I'm starting to view the whole process as just clocking in keystrokes.
My gitstats (http://notes.darkfunction.com/gitstats/index.html) is showing commits on 56 of 85 days. A week of the remainder I was on holiday, and I tend to rebase quite a lot so actual days committed should be higher. But in that time I have written over 18,000 lines of code and removed over 6000. Almost a full iPhone application since January in my spare time, now onto the home stretch and couldn't be more pleased with the results.
The best thing about the 'little and often' approach is how you get drawn into fixing something big just by starting to fix something small. Getting into The Zone for hours at a time is great and everything but honestly I'm starting to view the whole process as just clocking in keystrokes.
My gitstats (http://notes.darkfunction.com/gitstats/index.html) is showing commits on 56 of 85 days. A week of the remainder I was on holiday, and I tend to rebase quite a lot so actual days committed should be higher. But in that time I have written over 18,000 lines of code and removed over 6000. Almost a full iPhone application since January in my spare time, now onto the home stretch and couldn't be more pleased with the results.