I have been called a pessimist. I prefer to think of myself as a realist. When I consider it seriously, however, I often find that I’m more optimistic about results than realism allows.
From time to time, I’m told that if I was just more positive about everything, that “everything” would tend to go much better. Think positively! Watch the good results.
I was delighted to find an article titled The Trap of Being Unrealistic.
When we’re being unrealistic, we get in our own way and set ourselves up for failure, frustration, and self-criticism. We diminish our happiness and strain our relationships, building resentment.The Trap of Being Unrealistic
You can harm yourself by being too negative. But you can also harm yourself (and others) by being unrealistically positive. Give it a read. There’s some really good advice there!