I mean sure if you use heavy usage games lots then maybe this matters, but most of your use is standby and cell network stuff. I've got my Note 3 lasting 3-4 days on a charge. How?
1) Turning off background services that slurp up battery. Just took some looking at the battery monitor and then considering what I needed and didn't.
2) Turning off additional radios like Bluetooth and GPS when I don't need them. It doesn't take long to hit the button if I do, and even when they aren't doing things actively they can sip some juice.
3) Having it on WiFi whenever possible. In good implementations on modern phones it uses less power than the cell network. Work has WiFi and I have a nice AP at home so most of the time it is on WiFi.
4) Using WiFi calling. T-mobile lets you route voice calls through WiFi. When you do that, it shuts down the cellular radio entirely (except occasionally to check on things) and does all data, text, and voice via WiFi. Uses very little juice and an hours long call only takes a bit of battery.
The WiFi calling thing has been really amazing. When you shut down the cellular radios battery goes way up. Not just in idle, but in use. Prior to that (when I first got it T-Mobile was having trouble with the feature) standby life was good, though not as good as it is now, but talk seriously hit the battery. Two to three hours could do it in almost completely. Now? I can do that, no issue, and still have plenty left.