Symptoms of depression and/or anxiety need not have any environmental "triggers''. Depression, anxiety, or any other mental illness can happen at any given time, place, or situation. There have been occasions, and even holidays, where I was so depressed before, during, and afterward I put my "happy" mask on the entire time. Underneath, I was silently crying for no apparent reason. Any mental illness is a disease, even though I don't like using that term, (some people call it a chemical imbalance) just like diabetes, hypertension, etc. All of these illnesses, although not curable, can be treated and controlled with medication and therapy. I feel talk therapy can benefit every person in their life to some degree. Therapy has been an actual life saver for me. I also take medications for my schizoaffective disorder, OCD, and PTSD. I hope you consider what I posted when it comes time for you to make a decision about therapy. It is a big step, but probably one well worth your time and effort.