It is important to have friends that you enjoy spending time with and feel you can confide in and trust. These are the people who have your best interests at heart; they make you feel positive about yourself, sharing in the good times and supporting you through the bad. That is not to say that all friendships are easy or plain sailing: it does mean, however, that you are able to resolve any problems because you value and respect each other.
Make sure you actively seek to maintain the friendships that you value by:
keeping in touch
showing that you care
talking about your feelings.
Try to make time to see your friends in person, rather than at a distance via social media.