The people you allow in your life can either shore you up during the difficult times, or they can create a drag on your mental and physical well being. Scientists have found that people with a strong, healthy circle of friends tend to be happier and live longer.[1] Social connections, not money or prestige, are what truly matter. Only have people in your life who make you the best version of yourself.
Some places to find friends are community events that are important to you: social justice groups, religious communities, volunteering opportunities, a class to learn a new skill. The internet can also be a good place to meet people with similar values and interests and social media has made it easier to stay in contact with people all around the world.
Don't forget about your friends. This is especially true during the first stages of a new romantic relationship or when you're busy with work. Make sure that you take time out to maintain your important friendships (like going out for a quick coffee date, or even just sending them a letter or email asking how they are and checking in with them).
"Break up" with bad friends. People who don't listen to you, or only care about their own life, or who treat you poorly (talk about you behind your back, who belittle you, or don't support you) simply aren't worth spending time with. It's best not to make a big, dramatic production out of it; simply let the association fizzle. But if your bad friend senses something happening, you might sit down with them and explain why