It’s crazy how much we’re affected by factors outside of us. We try to limit how much our emotions are modified by anything but ourselves, but often find it impossible. Have a rough night sleep? The next day may be harder. Have a challenging conversation with someone? It’s likely to change our outlook for hours.
The thing I’ve often come back to is an understanding, at least implicitly, that after a rough day the next day is unlikely to be as hard. It will often be better.
So take these things in stride. Some days are harder, other days are better; and in the midst of all that try to remember (and it’s ok if you occassionally fail) to hug your loved ones, and enjoy the beauty around you.