Learn by watching and reading materials released by great system thinkers.

Ludwig von Bertalanffy

https://www.amazon.com/s/ref=dp_byline_sr_ebooks_1?text=Ludw...

John Seddon

https://youtu.be/hbNsQFd8DQw

https://youtu.be/kjKG011gsJ4

https://youtu.be/FbmuqYRi8z4

Theory of Constraints

https://www.amazon.com/dp/B002LHRM2O The Goal / Eli Goldratt

https://www.amazon.com/dp/B00KYW1L66 Necessary but Not Sufficient / Eli Goldratt

https://www.amazon.com/dp/0884271137 It's Not Luck / Eli Goldratt

https://www.amazon.com/dp/B00408ALES Isn't it Obvious? / Eli Goldratt

https://www.amazon.com/dp/B002LHRM2E Critical Chain / Eli Goldratt

https://www.amazon.com/dp/B004THZ9VK Be Fast or Be Gone / Andreas Scherer

https://www.amazon.com/dp/1499660901 Hanging Fire / Jeff Cox

https://www.amazon.com/dp/1439158932 Velocity / Dee Jacob

https://www.amazon.com/dp/B00XKX1FEO Epiphanized / Bob Sproull & Bruce Nelson

https://www.amazon.com/dp/B0185JFYEO Focus and Leverage / Bob Sproull & Bruce Nelson

A full list of books on ToC here http://www.tocico.org/?page=toc_books

Russell L. Ackoff

https://www.amazon.com/s/ref=dp_byline_sr_book_1?search-alia...

Gerald M. Weinberg

https://www.amazon.com/Gerald-M.-Weinberg/e/B00459FFAC/

Philip B. Crosby

https://www.amazon.com/Philip-B.-Crosby/e/B001HD360A

Peter M. Senge

https://www.amazon.com/Peter-M.-Senge/e/B000AQ8R86/

And many more, most of which are mentioned by the above in their work.