Please choose the correct ending to complete the given sentence: Health: [header] How to become positive, happy and optimistic [title] Choose a mantra. [step] A mantra helps you think more positively and cultivates a healthy mindset. When you're reciting your mantra, the part of your brain that makes self-judgmental thoughts turns off.

Ending1: You can use a mantra that you create for yourself, or you can choose a positive quote. Recite your mantra every morning or several times throughout the day. Ending2: To counter this change, come up with a mantra. Practice this for about 20 minutes and say a positive word in your head. Ending3: You can change this by taking a moment to think about what a mantra means: for instance, in koal's proverb, " i have some hope. " [substeps] Use a mantra to train yourself to believe in something positive. Ending4: You have this mantra, sometimes, for the good of the world, for example. The mantra might read something like, " come today, take a warm shower, a bath, and buy yourself a massage ".

Answer format: ending1/ending2/ending3/ending4