From my experience, in regular sex this is often not as helpful. Women can often see/hear when you are getting distracted. Sure, some might not care, but some do.
I think a very important thing to learn is to be able to give cues through moaning. Just the type of sound you make can indicate how close you are. Giving her the indication of slowing down, without you having to distract yourself. Just the breathing sounds alone can in some cases even be enough.
Women can do quite a bit during sex to increase/decrease pleasure. And its not bad to give them that control, women do like that, and even if you dont last as long, if they felt they have control, they wont care as they knew they caused you to go over the edge.
In the worst case if you are worried about being able to last long enough, you can go for a fallback: a dildo/vibrator/your tong. While you are resting a bit and prepare for round 2, you can at least stimulate her during this. The sounds she makes can make you capable of going for a 2nd round:
- With dildos size does matter though, and its not about comparing it with your cock (although, dont go severely larger, try to remain somewhat equal to yours or slightly smaller).
- While a vibrator might sound like it overpowers you, its also a way to get her a bit over the edge, after which her squeezing power can reduce.
- Your tongue is generaly a good option if you like blowjobs, equal treatment here does the trick.
- As alternative a womenizer can replace your tongue, these can be very intense.
The key is that she is also pushed slightly further already and also had an orgasm. Before orgasm when women get close, they can squeeze quite a bit, pushing you over the edge very quickly. Having her vagina relaxed a bit more makes you able to last longer. And for women getting several orgasms isnt a problem.
Dont always look to yourself at these things, sometimes its simply just her. If she is too eager to go fast, its going to be hard for you to last.
Still, if you are looking for distractions, look for things that distract in a good way: it shouldnt realy grab your attention. It should just be a point you can quickly focus on. Music and movies often work well here since when you are close, regardless of where it is does allow you to focus on a portion there. Dont try things like looking outside or the ceiling, these do not allow you to quickly pull your focus away.
The idea here is that when you are getting very close, that you can just focus away for 5 seconds. Which is enough to not cause disruptions, but enough to make your body recover from being close.
Also, it can matter whether she or you is the one doing the motion. Just because you can decide your speed doesnt always make it easier, since you can also go to your ‘optimal’ level for arousal, which can make things go fast.
Try new positions, idealy the slightly awkward ones. If such position is harder, it might restrict how hard/fast you can go. Which can help at lasting longer. Sure, it can also do the opposite by being more intense. But experimenting here isnt a bad idea. Even if you didnt last one in a certain stance, the entire build up to the stance itself (and the imagination during it) does provide a lot of stimulation on its own, which if you have done it more often is a method to get used to it.
And a last thing: dont be afraid to watch porn. It might get you aroused, but even if you didnt have sex, its still practice. It can also teach your body that not every time you get aroused means you need to orgasm.