For me, on the top of the list is securing and managing crypto assets. It’s kind of complex so I always brush it at the back of my head, leaving it as a pending task. I also don't normally do enough research but I do size my portfolio with a structured format on a couple of assets. DCA is indeed a must because it makes the journey a bit easier and less stressful in timing the market.
I'll also add, zooming out and rewinding, taking in a new/fresh perspective on things. Often times, when we get immersed in something, we tend to focus on the details and forget the big picture or missing the whole board.
All true!