I have MDD, severe recurrent. I've had 5-6 episodes and so it's now pretty much a feature of my life.

I have to check in with myself every single day, take my meds, get some sleep, general health hygiene is way more important for me. I am now noticing some patterns within patterns. For instance, when I start too many new projects at once at work, I am heading for a bounce. When the structure of my week goes off balance, I am at risk.

It's hard, but I am learning to look at myself and hear DANGER! WILL ROBINSON! more often. This week was a case in point. Training, then jury duty and then overwhelmed. I knew I was in trouble when I started to school someone on why it's nasty to call a colleague a user. That's when I put down the mouse and stepped away slowly.

One thing that helped me was to do MOodScope everyday....It's an online card game that gives you a number for where you are each time you play. Over time you can see that oh, when this happens, I take a nose dive, or this seems to be a trigger. You can also put a note on each data point. www.moodscope.com it's worth a try. I also know where my moodscope score goes critical and so if things are bad, I take the test, and my husband and some others get a note about my score. So DH is able to see that I am not doing well, and make adjustments.

But generally, I would say that you may be having a day where you let something slip (breakfast, lunch, whatnot) and then you go down. You need to either find out what that is, or do extra self-care once a week to fend it off.