Recently read an article entitled 'I Went 21 Days Without Complaining & It Changed My Life' by Tim Ferriss.  He talks about a challenge he took up to go 21 days without complaining (or gossiping or criticizing).  It started with a guy who wrote about a book about it and had these bracelets to aid in the process.  If you complain, you switch the bracelet to the other side and the goal is to go 21 days (since that's the general amount of time to make or break a habit). I don't consider myself a very negative person but thought I'd…