One thing that has really helped me over the last month or so is booking regular sessions on https://www.focusmate.com. Even if I just book a 20 minute session every morning, this helps me stay consistent with clearing out my email inbox and answering support tickets quickly. (Although I'm actually in a session right now and I got distracted with writing up this comment. I will go back to doing my emails after this! I should probably share my screen with my session partner so that I don't get so easily distracted.)
I also used to get very overwhelmed when I would see a lot of cards in my Trello todo lists. The problem is that I would dump all of my thoughts and ideas into a single Trello board, so it would turn into a bizarre mix of miscellaneous projects and ideas for things to do, like "buy some new socks", "pay an invoice", "go to an Ethiopian restaurant", "take some drum lessons", etc.
I solved this by creating a new Trello board that is strictly for important tasks. So now I have an "Ideas" board which is my old dumping ground of random things, and a "Tasks" board that only contains important things that I actually need to do. I also came up with a priority system where I would prefix each title with a number from 0 to 9, and I set up some Butler automations that would automatically sort the list alphabetically in ascending order. So then I would start each day by looking at my tasks board and doing the highest priority tasks first. During a lunch break, or after I finish my important work, then I allow myself to take a look at my "Ideas" board and maybe pick a fun project to work on, or do some personal errands. It's pretty hard to maintain a work/life balance when you work and live in the same place, because everything really starts to blur together. One minute I'll be working on a bug fix for a customer, and the next minute I'm playing around with some home automation project.