How old is he? How are his verbal skills?<br><br>
Never, ever reinforce whining by granting a request that is made in a whiny tone of voice. Just say, "My ears don't listen to whining. I will listen when you speak in a regular voice." If you have responded to whining in the past, expect this to cause some tantrumming in the beginning until he gets used to it. When he does ask for things without whining, make sure to praise him.<br><br>
As far as preventing the whining in the first place, make sure he doesn't get tired, hungry, or overstimulated as much as you can. Of course it is bound to happen sometimes, but it's amazing how much better things can be when you choose to leave the party just twenty minutes earlier, or give healthy snacks more frequently, or let that final errand wait until tomorrow. And trust me, a lot of it is hunger even when you don't think so.