As a co-founder (tech background but haven't coded in a while), I got comfortable with sales best when I hired a sales coach. There are so many things to learn in sales and a coach is often the fastest way to assess your inherent weaknesses and address them head on.

I paid $2k/mth about 10 yrs ago; at the time I felt scared to spend so much but once I realized it was an investment in me, and I put in the time to learn, I can safely say it continues to pay off even now. I quite enjoy sales now. Not saying I'm good at it but certainly a far way from "I hate sales and would much rather code".