Practice Listening
One of the greatest ways of validating other people, giving the gift of being seen and heard, giving them a sense of worth and importance, and cultivating closeness and friendships, is to simply listen.
Allow other people to express themselves, be genuinely interested, and pay attention. Ask probing, open ended questions.
And listen, with curiosity. You will learn so much, make friends wherever you go, and you might even get some good tips for stocks to buy, or taco stands in a neighborhood across town.