There are people who have wild mood swings.
There are those who battle depression and bipolar disorders whose moods vary frequently. The first person I met with bipolar disorder was fine while on medication, but when the meds ran out, the moods would be starkly different and suddenly change.
Thanks to God, my moods are fairly positive. There are times when I wonder if I’m doing any good, but after reading God’s word and prayer, I’m better.
For most people, unnecessary worry changes their outlook. There are temporary things in this life that appear sometimes to be major and aren’t. There are some things we can’t change. In any event, it’s best to let the Master have our worries and remember he’s for us always. That’s a good remedy, isn’t it?