I think the word "trigger" is over used. People might start to feel anything and everything triggers them. I had somewhat of a problem with a therapist who over used this word.

My own thoughts will pop out of nowhere and I feel "triggered", which to me, just means one thought leads to another and then another and I'm down, or anxious, or angry.

I like to listen to Eckhart Tolle, he has a way of explaining how to handle difficult situations, and explains the ego. It may help some who are searching for a way to deal with depression or anxiety or even addiction issues. Just type in his name on youtube, and the issue you might have, it may produce some result and hopefully help someone in need. It helped me tremendously.