I like waking up early. My productive days are usually the ones that I have definite actions for the day, and I woke up early (getting out of bed between 4 am to 6 am). The days I wake up late, I tend to waste my whole day with higher probability.
A complication is that I am sensitive to barometric pressure drops, and I usually cannot wake up early when it's cloudy. Even if I force myself out of bed, I would be in a groggy state for a while. (I tend to come to work 2~3 hours later on these days.)
My question is, how can I become more productive for the days I woke up late? It seems my mind is in a different state that needs some proper stimulation to get into the right mood.