Identify what's going on in your head

Try to know your own mind, your own thoughts well enough so that you can distinguish what are actually your own thoughts from the thoughts that Shaitan is whispering into your brain and from the impulses and urges that your nefs just causes to itch away at you. Shaitan is impatient like fire. So he'll hit you with a barrage of distractions. If one doesn't work, you'll try another. So if you find yourself, you know, unable focus, you can't concentrate because your brain is going all over the place, that's probably from Shaitan.

But if you have a preoccupation that just won't go away, that's just nagging at you all the time that needs gratification, but doesn't actually have any real practical benefit for you other than just gratification, that's probably your nefs. So if you can identify the sources of these types of mental disruptions, you can do a better job of disciplining yourself and training yourself to be able to overcome them.