Be firm. Be very firm and consistent.

In my daycare I have two separate areas for play. My son is among the six kids I care for in the main floor of my home. I have the two 1 year olds gated away from the 4 toddlers and via versa. They know which area is for the babies and which is theirs. I also make sure my toddlers understand the rules in each area.

My son has nicer toys in his bedroom and I make sure he knows that. I also make sure other kids knows that those are my son's toys. The daycare toys does not mix with his and if it did (when my son brings downstairs to play with others) he is to share. No crying, whinning will help. That's the rule. This being said, I praise them a lot for sharing and I mean hugs, claps the whole nine yard. The child would get my full attention for 30 sec so other kids are envy of him for receiving such attention. Next thing you know, your kids will be happy sharing.

As for sleeping, get him to sleep with a toy. My son was very attached to me but when I let him sleep with his favorite toy he was okay to sleep by himself. At 2.5 years old most kids understand sequence. Let them know 'if they do this, this will happen' to get them to do things, ie if they can clean up before lunch they will get more apple juice for lunch.

As for pushing or playing rough... all my kids are boys so they are naturally rough. They love to crash, tackle and jump on each other. I let them have this time for about 10-15min before I call for time out and get them to do breathing exercises to cool off. LOL During this time if they got an 'ouchie' I will let them know it is apart of the game they 'signed up' for. But any other time our rules are: no harming others, toys, and themselves.

Good luck.