How to, politely, say "no" to clients and remain friendly afterwards is probably one of the more useful skills I've acquired in my career. And "stupid" clients

How to, politely, say "no" to clients and remain friendly afterwards is probably one of the more useful skills I've acquired in my career. And "stupid" clients without an obvious business plan, etc. are not the sole reason to say "no". Much more common is the client who you can work with, but it's not the best option for you or the client. Because they're looking for the lowest price, not value received. Because they're looking at something that's only 60% in your sweet-spot, and isn't interested in the other 40% of your skill set. Because they don't have the budget for your current rates. And so on.