Five years ago, Carly Valancy challenged herself to contact 100 new people in 100 days , inspired by the book "Reach Out" by Molly Beck. The challenge brought her "incredible opportunities" in her career, from new jobs to mentor relationships, says Valancy, the co-founder of growth consultancy Momentum Growth. Valancy, 30, is repeating the 100-day challenge this year and sharing her skills through her networking strategy collective Reach Out Party . Her goal is to make the process of building