I had an especially trying time at the end of last season because I had planned to ease out of tri focus by focusing on training for a metric century. After that I planned to ease into the down season. Instead I went from tri season straight to rehab season, having to abandon the metric century ride, 5k runs, etc. What also made it difficult was that my partner didn't understand why I was upset about losing the ride and my ability to train. I ended up focusing all my energies on rehab and swimming and I managed to get through the depression (I also improved my swimming greatly).