The Gift of Fear is a great book. 

Bear spray would probably be effective, too :) 

Get the RO/PO, enforce it. Get a concealed carry handgun permit and take active shooter training.  Join a shooting club and go regularly.  Create that network.   Get the full meal deal cameras everywhere security system with armed response monitoring service and the big hungry well trained Belgian Melanois attack/lap dog who is trained to go for either the gonads or the throat on command. Go to MMA training regularly focusing on instant life altering debilitating injury or fatal consequence training.  Take out the CCP insurance so when you end this asshole when they attack, you have insurance for legal defense and to fight his idiot family if they try to sue.

Make the idiot know that they are at best dead and at worst maimed for life if they step out of line.

The couple of years before I learned that being bullied hurts and bullies are cowards when they are standing in a pool of their own blood trying to put teeth back in or trying to hold the two flaps of their lips together when they made the mistake of targeting me, I hid. I ran.  I am not sure what changed other than I got tired of it and stood my ground instead of just being afraid. I was still afraid, but I would no longer run and hide.  If I was going to hurt, they were going to experience a life long consequential reminder of their choice to bully.  Facial scars, fake teeth, a ruptured testicle or two. Whatever move they made that gave me the opportunity to damage them permanently.  Never once did I get in trouble for defending myself. Certainly not with my parents. Not even with the schools or the police.   Though I did get brought home once in the back of a police car after I was pushed into a sewage pond by a large teen girl when I was 11yo.  She was about 16.  I climbed out, stepped back, then when she was squatting down swizzling a stick in the water I grabbed the back of her belt and hurled her in.  I did not see that she was holding a toddler aged kid in front of her.  As the stb floating turd of a teen went flying into the sewage pond she threw the baby farther out into the pond. I jumped in and grabbed the toddler.  After I climbed out of the sewer pond a second time I picked up my bike and started pushing it home.  A few minutes later a group of kids chased me down and dragged me to some lady's house. I was swinging and kicking the whole way. It was terrifying.  At the toddler's mother's home a police officer was present.  He asked my information. I refuse to give it to him until I called my parents. I did exactly as my parents had told me. If I am ever stopped by the police say nothing except "I can't speak with you. I have to call my parents."  I did give him my phone number.  The floating turd teen and the floating turd toddler's mother started railing at me. The cop had to shove them away, took me to the car which I refused to get into until he put my bike in the trunk and called my parents. This went back and forth for some time until the group of kids showed the LEO where our house was on a map that the LEO had. He did convince me to get in the car and then drove me home.  He tried to calm me down. When the police car pulled up in front of my home the cop took out my bike then let me out of the car. He then walked me to the door and knocked. My USMC dad answered, the door, told me to get inside. The LEO tried to walk in and dad firmly put his hand in the middle of the LEO's chest and informed him he could not enter our home until he was invited. With the door open dad turned to me, asked me what happened. I explained.  Dad turned to the LEO and chewed him a new asshole for not calling immediately since he had been given our phone number by me the minute it all started once the LEO arrived at the sewage pond floating turd toddler mom's house.  Dad and the LEO spoke for a few minutes and dad finally invited him in.  That apparently was entertaining.  We had moved back from the Middle East a few years earlier and there were related decorative items all over the home. An antique opium pipe on a shelf, an antique 5ft tall Hooka in the LR near the front door.  Neither had been used in probably nearly a hundred  years but mom and dad still tell a story about the young LEOs eyes bugging out of his head when he stayed to visit with mom and dad for an hour after bringing me home. I had been sent to my room after the initial discussions on why I had been brought home in the back of a police car. 

The LEO ended up staying for about an hour.  I was a sobbing mess in the cop car but I refused to say what I had done was wrong. I did not see the toddler. I was defending myself.  The turd teen had thrown the kid into the middle of the pond.  Though I was the one what tossed the teen into the pond in response to her doing it to me.  The cop went back to the turd toddler's mom and later called my dad sharing that the sewer pond diving turd teen had been put in cuffs for a while as a clear message that she was the one who had started it all and that the turd toddlers mom was still livid but that the LEO had given her clarity that sending a herd of kids to drag me to her house was a bad move.

It could have gone any number of ways. But that was likely when I stopped being a victim and the first time I started delivering consequences to bullies.  Never again did I wait even a second to retaliate. When a bully would strike, I instantly responded with overwhelming violence.  It took a single instance in any future school to make it clear that I was not to be messed with.  Whatever bully made that mistake was the example to everyone else.

Set the example. Make sure the bully knows that they are done if they even think about twitching out of line. Defend yourself. Protect yourself.

IMHO of course.

...I get this.

I could, but then I'd be exposing my identity and have to go into hiding. That would make Mr Aniki very unhappy. *unknw*