I wouldn’t say I’ve ever had depression (and certainly never been diagnosed), but I think I was on the cusp not long ago, and did things I’m not proud of (shan’t go in to that now though, not something that needs to be shared with everyone on here…), still feel like I’m heading back there sometimes 🙁
My advice as a result of this is take it one day at a time, and set yourself small targets and things to look forward to. And ride your bike. Fast.