bad runs/streaks

ive been playin online poker for a little under 2 years now, starting from 2/4 and now playing at 10/20 & 15/30. ive had ups and downs of course and i have won 20K playing online during this time.
however, recently ive been running real bad. ive had 3 consecutive losing months, which is a first (not big amounts but still a negative for the month) i took a couple of weeks off of poker just to let things cool off and came back and continued to lose. it feels like i dont know how to play anymore. i moved down in limits over this time and still lose. right now my confidence is shot, cards arent coming my way, i feel like im playing bad, im getting bad beats, etc.
i know i am a winning player but right now it seems like i cant do anything right. any recommendations/suggestions for someone in this situtation?