It’s long been said that writing an angry letter – but not mailing it – is an effective way of venting without backlash. UC Riverside researchers say the converse penning letters-never-sent expressing gratitude carries a benefit, as well. There is an entire area of study in psychology devoted to gratitude, including its benefitsIt’s long been said that writing an angry letter – but not mailing it – is an effective way of venting without backlash. UC Riverside researchers say the converse penning letters-never-sent expressing gratitude carries a benefit, as well. There is an entire area of study in psychology devoted to gratitude, including its benefits » The FINANCIAL Education