LESSONS FROM KATHY GRIFFIN: FORGET KNOCKING ON DOORS, WHERE’S YOUR SIDE WINDOW?   It took the comedian Kathy Griffin a long time to find success. She knocked on hundreds of showbiz doors until in her own words, she found ‘the side window’ and phenomenal success followed. Until then, no matter how hard she tried, as a square peg in a round hole who didn’t fit the regular stand-up comedy mold