I usually practice at least one hour per day. But I do very focus and intense practice session. Every 2 weeks, I make a master list of things I want/need to practice/learn and then I keep a track of everything I do. It works well for me :)
Jean-François Renaud
http://www.myspace.com/jeanfrancoisrenaudmusic
http://www.myspace.com/jeanfrancoisrenaudmusic