I might want to add this advise to coders also: You fix some bug in some free software, to help some other company. Write them a small invoice, don't be shy of

I might want to add this advise to coders also: You fix some bug in some free software, to help some other company. Write them a small invoice, don't be shy of asking for money. You win a customer. Coders like me are cursed by infinite ideas, vs limited time. My approach is to wait till more then one possible customer for the idea exists, and the first one offers enough money to pay the prototype. Its then just a question to ask the others to pay a similar price to get into production break even. And any future sale is nearly passive income from old software and maintenance contracts. Ring the freaking cash register is even more important for lifestyle business, even if it feels as if every customer is your good old friend.