Spend time with friends that do have families, you will naturally perceive their children as your own, this also makes proffesions such as teaching very fulfilling, as you wll treat your students as your own. Nieces/Nephews are also good at this, so if any of your siblings have children, start inventing excuses to come over... everyone will benefit from having an involved aunt/uncle, as children really thrive with a powerful extended family.
