Positive people lend positive energy that helps to raise your own emotional levels. Also, positive people lend wisdom, insight, and suggestions, that can help you on various spiritual and intellectual levels. Therefore, it should come as no surprise that studies have shown that people who have happier work environments are more productive at work, and take fewer sick days. Also, studies have shown that children who have happier parents generally do better in school, are more motivated, and are more emotionally balanced than their peers who have disgruntled or depressed parents. It has also been shown that people who have a close group of positive friends tend to be lead more productive lives while being physically and mentally healthier.
The good news is that you absolutely have the ability to control the people you associate with. If you have a negative group of friends, a negative work environment, or a negative relationship, you can attempt to change the mood or focus through positive influences, or you can simply disassociate with friends, find another job, or end the relationship.
Therefore in order to enjoy life, and enjoy living in the now, you should try to surround yourself with positive people who have similar interests as yourself, even if they have different perspectives. For example, I belong to a group of men who meet once a month. When the group meets there is always an abundance of positive energy, which naturally facilitates open and honest discussions involving intellectual and spiritual topics. Each member has a unique life experience, and therefore unique viewpoints on spiritual and intellectual topics. The different viewpoints strengthen the group because it allows each person to view various topics from different perspectives, yet in a positive and constructive manner.