What are some quick and effective relaxation techniques?

Many good choices. There are many ways to quickly change gears & become relaxed. Many involve slow deep breathing. One advised by andrew weil is the 4-7-8 exercise- see www.Drweil.Com/drw/u/art00521/three-breathing-exercises.Html for full description. I like to breath in & softly say ahh-ohh-ooo-mmm (aoumm) as i breathe out. See www.Healthy.Net/scr/article.Aspx?Id=1205 for a good discussion of many other techniques.