Mary Sage Nguyen said this quote

People always try to make self-published authors feel insignificant. I have more respect for self-published authors, because I know the adversity they faced. They didn't just write a manuscript, query letter, and blam book deal. These authors had to do it the difficult way. There is no publisher, or agents, investing time, and money into making their book. Just the indie author's manuscript, own currency, and persistence.