I started off with HA, integrating all my devices i had at once, totally enthusiastic as I was. There were times where I installed several automations and integrations within just a few minutes, not giving them time to work for them selves, especially not in a „productive“ environment with wife, kids, neighbours, etc. all involved in the system.
Lots of automations broke or did not work as expected and I saw my self confronted fixing so many building sites at once.
I am through the roughest part. But should I start from scratch any time I will most surely start I’d small, test, iterate and move on.
I recently “started over” but it was more of a rebuild in place. I did room by room. Areas were not a thing when i started so i added everything to a new area. Deleted any automations that targeted that area. Renamed all devices/entities in the area to a standard naming scheme. Then creating a dashboard for that area. Rebuilt the automations one at a time. Letting them bake before starting a new automation. And finishing all automations for that room before starting a new area.