I confess: sometimes, I'm as good as anyone at putting things off. But being productive - at home or at work - is all about mindset. Here are four tips that have helped boost my productivity. They're all little things, and I find that is crucial. As a rule most people aren't good at making big changes, completely overhauling the way they think and work. So make little changes, and reap the rewards. 1) Work by the 'five minute' rule If something will take five minutes or less to do, don't put it off; do it there and then. For example at work recently I was sent a flyer I'd designed for a colleague, who wanted a couple of small changes. Knowing that would only take a couple of minutes I got it amended straight away and sent back to her within five minutes. She was thrilled with the prompt turnaround…