This is almost an open ended question because there aren't any reference points. Love is such a broad concept with many approaches and possible methods of operation. If your neighbor wants to play his stereo loud when you want it quiet, should you let him? You play your stereo loud when you love yourself, and you don't when you love yourself in quiet. Does loving him as yourself mean that you let yourself suffer for him? But then, that means that you're loving yourself less than him, which dictates that to love him as yourself, you should love yourself more than him? Are we dizzy yet?
For me, I had to put into some sort of perspective, so, in what is probably a oversimplification well beyond being too vague, I pictured this:
Imagine that your father has sent just sent you a million bucks. He tells you that the reason he sent the million bucks is because he loves you and he loves his grandson and he knows that you'll use the dough to benefit everybody, and that would make him happy. But, especially, the first thing he wants you to do is take hisgrandson and a couple of his grandson's friends to Disney World. You are to spend as much time there as is necessary, but they get to saty there until they've ridden all the rides and had all the fun they can have. So, you inform your son, he gets a couple of his buds, you all bundle into the car and off you go to Disney Word (which just happens to be about 30 minutes away). Well, after a short while, you notice your son and one of his frinds having a bit of a tussle in the back seat so you ask about what is going on. Your son tells you that he is sitting in the middle seat and he can't see out and he wants his friend to change places with him so he can see out because sitting in the middle is soooooo boring. Now, you know what lies just ahead of these guys, and you know that about 15 maybe 20 milliseconds after those guys get out of the car and see those gates to Disney World, they won't remember a thing about the trip. You could have probably sewn you son up in a mattress sack for the trip and he wouldn't remember a thing once his feet touched the asphalt and he catches that first glimpse of Mickey waving at him. So you say to your son, "Hey, don't worry about it, Disney World is 20 minutes away."
What you want your son to do is love his neighbor as himself.