For me, a lot of that came down to making sure every automation I add is usable with the least amount of mental effort. For the longest time I didn't automate much at all and often questioned whether I needed all this or not, then we had a baby.

Now we have a button in his nursery that will dim the lights, start playing white noise on a Google Home speaker, mark the start of a new nap on our Babybuddy instance, then turn off the lights after 30 seconds. When I press it again, it turns off the noise and stops the sleep tracking. If we didn't have Home Assistant we'd have to do all these things manually multiple times a day. Instead it just takes a single button press.

It's a small example, but things like this will keep popping up, and I'm looking forward to making them easier.