Help with glitching?

Now, I'm not sure if this should be in the help section, or the glitching section cause i need "help with glitching" Mods please move if this is in the wrong section.

My question is, what is needed to get into a glitch, is it lag? or what. I try glitching on my computer and it never works out. I can never get in, my computer has 4 gb ram and 3.16 Ghz. My friend has CA on two computers and when i try glitching on them its so easy (both of them). But there's no lag on his computer, its feels just like mine. I found some new glitches on it to be honest, every wall i try i can get in, i can get into any of those big metal crates i try.

But anyway, i was just wondering what is needed to glitch into something. If you have any hints or tips or key features needed to glitch post here.