If you are solopreneur, you must be able to both build and sell. I'm not sure these are hire-able skills at the startup level. If you can't do both or can't learn to do both, get a partner.
@nivipic.twitter.com/kxGoH7cdTH
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Also, possible that builders brains can do both, but sellers' brains cannot also do both. That said, there are many successful salesman who later became builders. Ty of Ty stuffed animals, Schultz of Starbucks, and Kroc of McDonalds are some examples.
You also have to know what style of selling works for you. For me I was horrible at car sales when I am in the position to sell based on logic or educate I do best.
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