No matter how much I wish it were true, the hours I spend on Twitter, Facebook, Instagram and Pinterest, help me none whatsoever in the actual writing of the next book. The only thing that gets the work done is sitting down and doing it.
I attended James Scott Bell's workshop on creating a career with ebooks and he mentioned that he has weekly quotas and tracks them in a spreadsheet. Too lazy to spend an hour or so to create my own spreadsheet, I found a cool app called Write Chain. It's for the iPhone and it's free.
About Write Chain
WriteChain stores word counts for each writing session and tracks the total words written across all sessions. Yet, if you’re serious about writing, you know that dedicated practice is the only way to improve and succeed. WriteChain takes the session tracking a step further by counting consecutive daily sessions to measure your “writing chain”. If you skip a session, you break the chain and WriteChain lets you know about it.