I am so encouraged that you are exploring evidence-based cognitive and behavioral techniques as a way to address the thoughts and behaviors that perpetuate sleep disruption!
Your concern about job performance is understandable, but how we sleep usually has far less of an impact on our days than we often think.
Trainee doctors and surgeons, for example, often have to deal with life-or-death situations while getting as little as three hours of sleep each night (and often working more than 100 hours each week) — but they get through it and successfully complete their training.
In studies, the only consistent observations we see connected to sleep loss are daytime drowsiness (usually when sedentary), reduced performance on routine and boring tasks and more irritability — and even these effects subside after a couple of weeks as the body becomes accustomed to less sleep.
What can happen, however, is that every time we make a mistake or experience a negative moment during the day we blame the previous night of sleep — whether sleep is truly to blame or not.
Sleep restriction is only one component of CBT-I and usually takes a few weeks of consistent implementation. If you are spending a lot of time awake in bed during the night, and that wakefulness is not pleasant, it can be really helpful to get out of bed and do something you find a bit more enjoyable instead.
Shifting unpleasant wakefulness out of bed often helps calm the mind a bit quicker and it prevents you from reinforcing a negative association between the bed and unpleasant wakefulness.
If you are spending hours and hours awake in bed on most nights, this suggests that you might be allotting a bit too much time for sleep, but it’s hard to say for sure based on your post alone.
Ultimately, nothing you have described is unusual so I have no reason to believe you won’t find CBT-I techniques helpful. I don’t typically coach clients on ACT techniques because I feel that staying in bed when being in bed doesn’t feel good and accepting any worries or thoughts (really the only main difference between ACT and CBT-I) is a very high cognitive skill that requires a lot more practice compared to just getting out of bed and doing something enjoyable.
I hope this helps!
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