Please choose the correct ending to complete the given sentence: Health: [header] How to find happiness after a traumatic brain injury [title] Smile! [step] It's amazing how the simple act of smiling can make you feel better. It sounds silly until you do it. It's all about your mentality.

Ending1: No one looks at their facial muscles like a praying mantis. Just take a moment to think and then spread the smile across your face in no time. Ending2: When people smile, they will remember pleasant memories about their trauma and feel better. Though you may feel out of the loop on every detail of your day, try to take it in stride. Ending3: What is considered " happiness " is simply a constant and consistent state of being. When you smile, your brain uses mental ideas that engage your imagination and incorporate whatever it sees around it. Ending4: [title] Look at your situation as a mini-vacation. [step] We all work very hard and, as much as your situation is less than ideal, you get a break and other people have an opportunity to take care of you.

Answer format: ending1/ending2/ending3/ending4