There are a lot of things that contribute to happiness, some of which are easier to do than others. According to Medical News Today, a good night’s sleep is proven to increase both happiness and well-being. A study by Dr. Tang and colleagues concluded that better sleep (in the sense of quality and quantity) increased happiness as much as 8 weeks of mindful cognitive therapy. With that, more than 33% of US adults do not get enough sleep. According to the CDC, the following represents the amount of sleep certain age groups need daily: 8-10 hours for teens (13-18), 7 or more hours for adults (18–60), 7-9 hours for adults (61-64), and 7-8 hours for adults (65 and older). Even fitting in one more hour of sleep could greatly increase your quality of life.