prednisone, steroids and withdrawal effects

Hi, does anyone have any hints about how to cope with the withdrawal symptoms associated with steroids.
I had a BMT in may 2007 and have been on a course of steroids several times since. the last time was for graft versus host disease of the lung which the prednisone was great at fixing. I have been on predisone for a year and have just very slowly brought the dose down so that now I have been off it for about ten days. I have been cranky and short tempered, impatient, frustrated with small things, when normally I am not like this. This seems to happen every time I get off this stuff.
John