I have always been confident and sunny, but today I suddenly feel helpless and confused! What can I say?

If you want to ask about me who has always been confident and sunny, today I suddenly feel helpless and confused. How to post something, you can write like this:

1. Loneliness means no one is with you, and loneliness means no one understands you. 2. Be stronger and believe in yourself; be firm and believe in your own feelings. 3. I don’t know what is missing, but I always feel that I am not as happy as before. 4. There is nothing to be afraid of, you have to believe that everything will be fine.