Bee, I raised my 11 lb wonder son and a step son. My step son sent me a birthday card when he was 21 saying, "Thanks for never making threats, always promises." Both boys knew where they stood , and what the consequences would be for bad behaviour.They're both successful guys now.YES! And they would STILL open it ten times each evening and look, then turn around and say, "There's nothin' to eat in this house!" You are a good mama, it is plain to see.
When my oldest had his 16th birthday party there were several boys his age and a few younger ones, my other sons included. I beat them all in arm wrestling except the last one...and my arm was plumb wore out by then! And this was half the second string football team....you can bet those boys behaved.A single mom has to have something to stand on when raising boys without the help of a father figure, so discipline has to be consistent and make an impression the first time.
Kids love boundaries and they love and respect a parent in whom they can count on to be the same every day and consistent in enforcing the rules. It makes them feel secure while growing up and they have some parenting skills of their own when they get their own families. I've found that animals are the same way...they crave boundaries and someone who can tell them where those boundaries are. Makes them feel secure too.