<img src="https://www.washingtonpost.com/wp-apps/imrs.php?src=https://arc-anglerfish-washpost-prod-washpost.s3.amazonaws.com/public/63RTOGXDAFCAJKQ4TKT5SPHS6Q.jpg&w=1024" /><br>Productivity experts offer these 13 tips to help workers improve their performance and lower their stress during the year.