Anyone can wake up early if they absolutely need to, the difference is, do they wake up perky and ready to go, or do they take an hour or two to get out of thei

Anyone can wake up early if they absolutely need to, the difference is, do they wake up perky and ready to go, or do they take an hour or two to get out of their groggy stage? The latter is me, I'm a nightowl, but if my schedule demands it, I can eventually get into a routine of waking up early. But I'll still always be groggy in the mornings, not sure I can change this.