"Customers don’t want your product or what it does; they want help making themselves better (i.e., they want to transform a life-situation, make progress)." [1]
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"I decided to make a project that did only one thing and did it well, with the goal instead of succeeding being to not fail. Anything is better than never shipping. The result was BitTorrent." [2]
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"Once you’ve built something of value, your marketing isn’t telling people what it is; they’re smart enough to figure that out, telling them how they can use it." [3]
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"What we call profit being the reward for understanding an aspect of human nature ahead of the competition." [4]
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Focus on solving one thing well. Focus on helping people become better versions of themselves. Tell them how they can use it.
That's the focus.