Lessing, 88, said the Nobel Prize has led her on an endless stream of public appearances that have thoroughly disrupted her life, The Sunday Times of London reported.
"All I do now is give interviews and spend time being photographed," Lessing said.
The author of "The Golden Notebook" said she has already made commitments for the more than $1.5 million award that comes with the Nobel honor.
"It has gone to my children, my grandchildren and my extended family," she said. "It will all be gone in two years. Anyway, my accountant tells me I should get rid of it. Give it away otherwise the tax man will get it."
Lessing has downplayed speculation that "Notebook" heralded women's liberation, saying her work was meant to focus on human breakdown, the newspaper said.