Nooo. 99.9999% of the time you're better off delaying than retaking.For me I told myself that yes, I want to do well the first time, but if worst comes to worst, I am able to retake. I took the exam twice, and obviously people want to take it once ideally. But telling myself that if something happened it wasn't the end of the world really helped.
What I mean is you get to the test and it seems like everything went well but you ended up doing poorly compared to your practice scores. There are some occasions where you have excellent practice scores and the test seemed fair, but you get a bad score. So nothing to do with delaying hahaNooo. 99.9999% of the time you're better off delaying than retaking.
I do agree with telling yourself it's not the end of the world but not with the retake thing. You can pretty faithfully predict scores and performance from your practice tests
this is really good advicewhenever you study, as soon as you feel yourself fading and not being productive (having to re-read a paragraph for example), take a 5 minute break.
At first you may have to take frequent breaks. Eventually, you will need breaks less often and will increase your stamina to continue studying for longer periods. It makes your study time more effective and more efficient. This also helps as you work up to taking full lengths.
If your problem is just motivation in general, take a break for 1-2 days then come back refreshed. You know the importance of it.