What skills are considered RARE and VALUABLE in RE Investment?

[Kaydn Jensen]

Hey BP, 

[Disclaimer to the question I am about to ask is that I understand that at the end of the podcast they ask a similar question, however, the answer(s) I am searching for are slightly different]

I have one simple question. 

What skills do you consider to be RARE and VALUABLE within the world of real estate investment? 

An example of what I am looking for is something that can be developed through consistent deliberate practice. In other words, not so much a mindset like what is often mentioned on the podcast, rather a set of specific skills. 

I know the answer depends on the niche within real estate investment that one pursues. I hope to be involved in large buy and hold real estate investments/developments because I see great advantage in the economies of scale that can be achieved. That is my broad idea of what I hope to do for now. I appreciate any of you who can help me identify some things to begin developing now so that I can one day be as successful as a lot of you are!