Mudra hand gestures or poses are often used in yoga practice, meditation, and for healing purposes. One I am familiar with and use all the time is Gyan Mudra, shown in the photo left. Click here for more information about Gyan Muddra.
Here is the one to take a break for, the Mudra for Wisdom. Simple hand position with deep breathing. Both can have a dramatically positive effect during a trying time, or at any time.