Calendar Issues

This sounds like a strange stress issue, but it's a useful heading to help understand peaks of stress and related unhappiness which can be marked on the calendar - and to that extent they can be anticipated.

They include

 - wedding anniversaries (especially if a marriage has failed);
 - birthdays ('...my mother would have been 63 today'; '..my son would be 15 today if he was still alive' and so on);
 - deaths (....my Dad died 2 years ago this week);
 - Christmas - this is stressful in many normal families, but if you are living alone, widowed or without your wife or partner, then this can be a time of great sadness;
 - New Year - what will it hold? Last year I was with .... 

There may be other examples in your life, and as they can be anticipated, then there are actions that can be taken to avoid or alleviate the effects.

Make sure that you are busy on those days, or with other people. Take some extra portions of the helpful foods for a few days before.