Protecting what's yours doesn't always translate into going to the local gun store, buying the biggest gun, and keeping a vigilant watch over your property. No need to chug Redbulls and eat all of the sugary snacks to make sure that you are not going to miss someone entering your yard, your business, your home.
All you have to do is install a handy security camera and it will make sure to do what you were doing in the above scenario, but without needing to sleep... ever. These days it is rather normal to have a security system in most homes. In fact, many insurance companies offer a deal on homeowners insurance if you install one in your home.
Now this may put some people off, but these feeds do not go anywhere but to your own personal collection center that you setup in your home. You are Big Brother in this scenario, meaning that you can see all rather than have another person come and make sure that you are on your best behavior. Data collection is a rather hot button issue, but if private citizens take the power into their own hands, they can take most of the fear out of the idea.
Thing is though, these devices are scarier to most people who want to do you harm than a gun could ever accomplish. By capturing someone doing an illegal act, you have actual proof. Proof that you can take to court, to hold over their heads, making them pay for their actions; rather than having your word against theirs in a court of law.
Pictures are worth a thousand words, and making sure that you are keeping your property safe by installing your own private cameras will only improve your security.