Post-Tri Depression/Anxiety?

You may have felt that you could have gone faster/pushed more on the day, so you are feeling somewhat let down by your performance, or by how many people passed you, or whatever.

This is pretty common, cause you've worked and planned for this event, and then after it's over, it can be a letdown.  One thing that's helped me, is to focus on why I'm doing this in the first place (for fun, for fitness) and maybe just getting back to doing a workout cause that's what you want to do, no HR monitor, no goal for the workout, just going out and doing something cause you love to do it.  Does not even have to be swim/bike/run - maybe take one or two days (or even a week) off of I'm-training-for-a-tri-and-sick-of-it and just go out and be active.