The most important thing for longlife battery is by not driving too fast. I also have a twice 38 km daily commute. I am not a fast driver, but there is even a difference in driving 106 km/h or 96 km/h. My average consumption is nowadays 12 kWh/100 km, where it was 15 kWh/100 km when driving faster. When you drive 120 km/h you can expect 19 kWh/100 km. In Germany they did a test, driving 130 km/h with a Kia Soul EV and they had then only a range of 80 km
So with driving a slower average, you get more km out of the battery over the lifetime by more than 50%. My average is 56 km/h over the last 10.000 km. Driving faster on the highway for my 38 km trip only makes a difference of a few minutes.
Next thing is to take a shorter route. For me this is 12 km shorter than taking the highway, or 3 km shorter than the navigation wants me to drive. And the advantage is for me, that I do not have traffic lights and the roads are not busy. So I drive less km per year and I am as quick as having the longer route. Advantage of the shorter route is also that the energy consumption is less. So this saves more than 10%.
In general it is not good to have the SOC on 100% for longer time. So when the 100% range is needed, charge to 100% full just before you go, using again the timer.
Try to keep the SOC between 20% and 80%, this gives the battery less stress. But of course, when the 100% charge is needed for the range, just use it.
Because I can charge at work, and they have solar panels, I charge there (3.6 kW charger), once a day. I use the timer function of the charging, start the charging at 11:00 and charge till 80%. This means that the SOC is around 64% when arriving at home and the next day I arrive with a SOC of about 48% at work. At Fridays I charge till 100%, so I can use the extra range in the weekend. I also can charge at home, with the trickle charger, at 10A and 240V. It will charge with about 2 kWh. At home I also have solar panels, but because when I arrive at home the sun is gone, it is better to charge at work. At work the cost for 1 kWh is 15 eurocents. At home this is 18 eurocents, so this is also cheaper at work and better for the CO2.