They go to a job they’re passionate about

If you wake up dreading the day and have to drag yourself out of bed to get to work, “it might be time to start looking for greener pastures,” says Ilya Pozin, Pluto TV’s chief growth officer and co-founder, in a LinkedIn blog post. He notes that optimistic people choose jobs or careers for which they have a genuine passion. “For optimists, work is more than just an opportunity for a paycheck. It’s also an opportunity to learn, grow, and do what you love.” Eventually, your happiness and satisfaction at work will seep into every other aspect of your life, too.
They try, and try again

Optimists constantly search for new solutions to old problems, thanks to their glass-half-full mentality. In one study, participants were given anagrams that were nearly impossible to solve; the most optimistic subjects tinkered for 50 to 100 percent longer than the pessimists. And since optimists tend to stick around to solve problems long after pessimists have thrown in the towel, in the long run they tend to be more successful: at work, in relationships, you name it.
They spend time with other optimists

Finding a cheery partner is the best way to become one, according to Prevention. In a yearlong study of more than 100 young couples at the University of Oregon, positive thinkers and their partners reported greater satisfaction in their relationships than optimist-free pairs did. And the benefits apply to any kind of relationship: marriages, friendships, or even co-workers. Odds are, the more positive your environment is, the more positive you will feel, too.