Let us do the testing for you

Reliable, unbiased reviews to help you find the best personal growth products available

Learn More About Our Mission

Best by the Numbers is created by Lachlan Brown

Latest Article

What People Are Saying

Hear from the readers of Best by the Numbers

"Lachlan has a knack for reviews! I was a little skeptical when I Googled 'can i live forever' and saw his article on longevity. But I read it and believed that in fact it was possible! Thanks Lachlan!"
Philip Watson
Student
"I was struggling with my relationship, unsure of my next step... Then I read Lachlan's 'my secret obsession' review and realized the error of my ways. I just had to make some small changes and finally got my man back. Brilliant site."
Emma Roberts
Designer
"You have to be careful when it comes to supplements these days! You never know what you're buying... That's why I love this site. Lachlan has tried everything first so we can know what works. I can see why he calls himself 'the human guinea pig!' You're a legend Lachlan!"
Olivia Spencer
Coach

My latest book!

The Art of Breaking Up: The Ultimate Guide to Letting Go of Someone You Loved

In this book, we offer life-changing insight on how you can transform your current distorted thinking about your breakup into something far more realistic and constructive.
 
Together, we’re going to tackle your toughest emotions about the breakup, and get you back into a healthy state of mind. By the end of this book, you will find ever greater happiness than you had before, and be better prepared to one day find love again.

Our review articles

Lachlan Brown

The Silva Ultramind System review: My verdict (September 2020)

The Silva Ultramind System on Mindvalley revolves around one of the most famous teachings in the field of self-improvement and “brain hacking”: the Silva Method by José Silva. But is it worth your time, and does Mindvalley founder Vishen Lakhiana do a good job of repackaging the Silva Method in his new course? I wanted

Read More »
Lachlan Brown

Superbrain review (September 2020): What I learned from Jim Kwik

Brain hacks and productivity secrets seem to be all the rage the last few years, with countless articles and books published on revealing the ways we can “min-max” our brains, our days, and our overall productivity. But there’s a lot of fluff out there, or content that is generally useless or meaningless and doesn’t really

Read More »
Lachlan Brown

Is the MindValley Quest All Access Pass worth it? My verdict (2020)

If you’ve followed my blogs in the past, then it should be no surprise that I’m a frequent student on the Mindvalley platform, which might be the most unique learning platform on the internet because of the “one-of-a-kind” nature of many of their courses. And one of the most common questions I get from interested

Read More »
Lachlan Brown

28-day keto challenge review (2020): Is it worth it? My verdict

The keto diet is among the many diets entering the world of fitness. But unlike other fad diets, the keto diet is focused on shifting your metabolic processes so your body burns fat for fuel instead of carbs. Ultimately, it’s not really a shortcut to losing weight; it’s a process for effectively burning fat.  When

Read More »
Lachlan Brown

The 15 best Mindvalley courses: The complete list (2020 updated)

Mindvalley is an online learning platform dedicated to spirituality, self-improvement, meditation, and holistic health. The site features over 40 courses on an intuitive, easy-to-use online platform. Mindvalley has partnered with the leading names in performance and productivity including Robin Sharma and Dr. Michael Breus. With dozens of courses to choose from, how do you find

Read More »

Qualified In :