How do you guys cope?

I've lost an old lady I knew (natural causes), an old friend (car crash), an actor from movies/shows I really enjoyed (car crash) and a pet bird I had when I was younger. (unknown cause of death) I was wondering how other people define moving on in life after losing someone close, and how they managed to move on. For me personally, I already have a stressed life so I don't think about it much, but I do break down at times when listening to music at night. Which in my opinion is my way of moving on since I am moving forward in life but still at times taking time to remember those who I once knew but will never see again.