You can give your social life the biggest boost by being more adventurous. Connect with someone you normally would not socialize with. Ask your boss to join you for lunch, or find out if your neighbor wants to join you for a cup of coffee. Getting more familiar with unfamiliar people is a great way to stay in tune with what is going on around you. Plus, it's a great way to lay the groundwork for a bigger and smarter social network. And that's good for your career!