J.C.
What a great question, M.--- your baby is way too young to keep it together- that's what mommys and daddys are for-- ( I'm a mom, grandmom and long-time preschool teacher - I LOVE little guys!!!) . So it can look like this:
he wants some juice but you are still cleaning up breakfast - so you can give him a sponge and say- ''YOU clean, too--- water in a while''' ( so you are not saying 'no, you can't have it'' - you are changing the subject to something he likes--at the same time saying there will be something to drink in a little while- but perhaps not sugary juice.
He wants to play with the cat in a way that you don't like --- - you can grab one of his stuffed toys and say '' THIS dog ( or kitty, or fish or whatever it is) likes to be squeezed----'''' You don't need to say yet ''' ''Oreo doesn't like that''' -- -- you just change the subject -- at the same time making sure he cant squeeze or step on or - drag - a cat or dog -- but it will be a long time before you can say to a 4 year old ''' You know Oreo needs gentle hands--- ''' . It will be possible ( perhaps) when he's 2 or 2 and a half to ssay '''' squeezes are for toys-- soft, open hands are for Oreo''' -- and perhaps get some measure of obedience, sometimes - but it's a long slow process and right now -- he can not obey --- he can't. So we distract, distract, distract - and sometimes we say firmly '''' I will move kitty ( or my good china - or my glasses - or --) you CAN play with--- whatever.
Remember, too -that children believe our body language long before they believe our words ( which they only understand some of the time anyway) -- they know that Mommy moves them away from Kitty when they are too rough- they believe that Mommy means it - and they begin to learn ''' Mommy and Daddy will interrupt me when i do THESE things- but leave me alone when I do THOSe things -- and be sure there are lots of things for him TO do -- with little brooms - with little boxes - with things like wht he sees YOU and DADDy and G'parents use.
Oh, You will have such joy
Blessings,
J. aka- Old Mom