Mods, please let this through, thank you for your consideration!
There is an amazing and very enlightening shir on TorahAnytime.com about OTD and personality types. THis very enlightened speaker talks about 4 personality types and how every case of OTD he’s ever seen all share the same personality type. He said 25% of kids have this personality type, and statistically, 1 in those 25 become OTD due to additional stress factors. It was a very eye-opening speech, I highly recommend it!
Here is the link: https://www.torahanytime.com/#/lectures?v=36535
I recommend this shir to every parent. My kids are still relatively little, but one of my daughters has this personality type. It has totally changed how I deal with her, for the better! We have a much less conflicts now after I incorporated his advice.