Give support and encouragement to those that need it. Be a pillar of strength to those weaker than you. Volunteer your services to groups that help others. Let the goodness in your heart shine as a beacon to those around you. Know that what you get from life is a return on what you give.
Lonely men seek companionship.
Lonely women sit at home and wait. They never meet. Every technique described from here forward is but a codification of what the socially adept do instinctively. So can you too master these modes of behavior by understanding and practicing them to the point where socializing becomes as natural as breathing. I can't understand why people are frightened of new ideas.