I would have to say I have been depressed since my husband of 35 years passed away in 2010. I can't shake it completely but I do somewhat cope. I live with a son who is chronically depressed and that makes it harder on me to deal with my own depression. I hope if any of you are depressed or live with someone who is that something good will happen to take this issue out of your life.
I was diagnosed with Persistent Depressive Disorder (or Dysthymia) almost 20 years ago. It's more of a mild but chronic depression, so I don't very often have severe lows. Certainly never bad enough to think about suicide. However, I don't ever feel really happy either. I can't really find anything that I enjoy, and I never really get excited about anything. I feel like I'm just going through the motions every day, and I don't understand the point of being in this world. I've tried therapists and various anti-depressants, but nothing has really made any difference. Having pets has probably been the best thing for me, since it makes me feel like I have at least some tiny reason to be here and get out of bed in the morning. I also try to exercise and practice yoga, but it's difficult to get motivated when you're depressed. I'm thankful that my husband is very supportive, but I can tell it's frustrating for him sometimes.
I had to put my dog to sleep unexpectedly several years ago. She was my canine soul mate, and maybe I'm just nuts, but I've never really recovered. I can't imagine losing my husband and what a mess I would be. I'm so sorry for your loss, and I hope you and your son will find peace and happiness despite this crazy world we live in.