Sign up for our What's On newsletter - for all the latest whether you're staying in or heading out and aboutIf you're not feeling great today - you're probably not alone.Today, the first day of the third week of January, marks Blue Monday - commonly known to be the most depressing day of the year.On an average year, Blue Monday occurs around the time when it's freezing cold, the novelty of the festive season has worn off and our optimism for the new year is long gone.But under the strict and