Let others feel that you like them.
For instance, compliment the new hairstyle of your wife, notice how the coat of your secretary suits her personality, praise a job well done by your kids, and so on.
Watch a smile and pleasant response come from the person being complimented.
However, do it sincerely.
There is this thing known as dishonest flattery that can ruin a relationship.
Some people can recognize if you are being truthful or not; they can see right through you.