In the past I use to drink a lot of coffee, maybe 5 cups or so a day. It didn’t use to impact me negatively, as it was ok for me to stay up late and burn the midnight oil. Now that im in my mid thirties, it finally caught up with me. Now with kids I need to be asleep by 10:30 pm and I had terrible insomnia. Also my energy levels were all over the place and I would feel depressed at times.
I cut out caffeine for the most part, and only drink one or two cups on the weekends, or vacation. My energy levels are way more consistent, I can sleep soundly at night, and my mood is way more mellow and I feel overall happier.