start from scratch
see from scratch.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
Examples from the Web for start from scratch
“They have a start-from-scratch personality,” he says and must face constant but always changing adversity on their own.Vermont’s Amazing, Grueling, Traumatic Race
June 22, 2011