In my consulting business, I've found the opposite strategy to be true. I, if anything, deliberately slightly overbid/oversell. Then when I deliver the produc

In my consulting business, I've found the opposite strategy to be true. I, if anything, deliberately slightly overbid/oversell. Then when I deliver the product that they asked for less than I quote them, I get REAL word of mouth, glowing recommendations. I also have found that this practice really weeds out the people that would otherwise give me endless problems like delaying or fighting payment, poorly defining their requirements, changing their mind dramatically half-way through, or failing to take my advice on things that will give them legal problems or cost them an enormous amount of money down the road. (And then come back and try to blame me for them not taking my advice.) I also have the budget to deliver what they actually need at the quality they actually want. Being proud of deliberately misleading people in a way that negatively impacts them feels really gross to me.