Personally, as a technical founder that learned some sales and is still learning, I would say that the biggest mistake I initially did is picking wrong sales "r

Personally, as a technical founder that learned some sales and is still learning, I would say that the biggest mistake I initially did is picking wrong sales "role models". All "role models" for sales I knew were akin to used car salesmen. They try to push something on you very hard using cheap sales tactics. This doesn't work in B2B, especially enterprise. Sleaze salesmen are going extinct. People are getting immune to any "one weird trick to get a sale". You are there to solve your customer problem, help your sponsor look good inside their enterprise and only then get paid. Focus on maximizing the value you are providing to the customer, making this value very clear as early as possible and only after that getting a fraction of that value back in $.