Radek Sienkiewicz

Hi, I'm Radek.

Above the surface: growth and conversion optimization consulting at Nextommerce.
Below the surface: reading books, playing basketball, fascinated by data science.
We all learn so many things every day. It would be a shame for all of it to go to waste. This is my attempt to share as much as possible.

Recent articles

February Challenge results: The effects of publishing daily for a month

February Challenge summary: Daily publishing. How it went, what I learned from it, will I keep doing it?

January Challenge results: Great effort, great outcome, needs modifying

January Challenge summary: what it was, how it went, what I learned from it, will I keep doing it?

What happens when your article is mentioned in the Morning Brew newsletter?

What happens (and what doesn't happen) when your article is mentioned in the newsletter that goes out to 2m+ people.

How to develop a bias for action

A compilation of research, findings, and my own experience on developing a bias for action.

A Challenging Year: 2021 with twelve 30-day challenges

Twelve monthly challenges, one for each month in 2021. Zero sugar, 50 push-ups per day, doing only "boring" stuff for a month, and everything in between.

Recent books

More good stuff