One technique, popularized as ‘The God Box’ by Mary Lou Quinlan (who seems to be creating an industry out of it!).
I also subscribe to the fundamental concept of writing things down to reduce anxiety and worries. This ranges from the day-to-day (what are to do lists, after all, but to avoid the worry about forgetting something) to deeper, more fundamental worries, as in ‘The God Box’. My blog and related writings provide this kind of release for me.
The science behind it:
In a 2010 study, he [Dilip Soman, UofT Rotman School of Management] and his fellow researchers found that participants could alleviate feelings of regret or failure by physically sealing up materials associated with bad experiences in a box or an envelope.
“The God Box is a great example of that,” Dr. Soman says. “The physical act of firstly putting something to paper almost lets me get it out of my system. Turning it over basically allows me to get some psychological closure.
“When someone is distracted by a worrying thought, it can use up mental resources, he adds. “It doesn’t let you focus on whatever else you’re working on with 100 per cent devotion of energy.”
Once those worries are filed away out of sight, however, they’re also out of mind. “God Boxes do that – they basically psychologically distance [anxieties] away.”