Your children is older than my daughter ( i think) anyway... i can relate a little to some of what you're saying. After she was born, i would wake with her early mornings around 4 a.m. she would go back to sleep, I would have coffee and read. Everyone needs time for themselves.
Sometimes even just a small weekend vacation, with family.. ( i know you said alone) is good as it at least changes scenery.
Take care @snowpea
Yes, morning coffee time is so important! A vacation isn't possible for me but I'm loving the coffee right now. :)