“Happiness” is one of the most studied areas of human endeavor in the history of the world. But unfortunately we all struggle to be happy because common sense isn’t common practice. 
That’s why you need to use your common sense to be happy. Just be alert and find your purpose in life. Change your outlook about the past, present, and the future in specific ways. 
Here are the basic secrets to make you happy by utilizing your common sense.

Accept the past as it was to be more free in the present.

Be present and engaged with the moment.

Find something to be excited for tomorrow.

Sleep 8 hours every night.

Drink more water.

Take regular breaks while working.

Work out maintaining your schedule.

Get outside and move around a little bit.

Eat more greens and avoid the sugars and the caffeine.

Avoid the things that make you up and then crush you down.

Avoid the white starchy things and the food groups that you find you are allergic to.

Honor and respect each other in every relationship.

Have faith on your spirituality.

How to Be Happy - Secrets to Happiness