Look for something to acknowledge people for. Genuinely complimenting someone costs you nothing, but to the recipient, a heartfelt compliment and the feelings it generates cannot be bought at any price. Recognition, encouraging words, and pats on the back are all excellent ways of making positive impressions, especially if done in front of others.
Avoid general compliments as they may just seem like flattery, “sucking up.” Much more powerful is a comment about something positive that person has done: compliment on behavior or achievements.
A thoughtful person is a remembered person. Be generous of spirit. You will get back much more than what you put out. The end result of acknowledging and praising others is that you have given people reasons to speak well of you to others. Such word-of-mouth character endorsements are far more powerful than anything you could ever say about yourself.
It does not matter how successful a person is, or how good that person feels inside: it is always nice to know that others appreciate one’s personality, talent, uniqueness, attitude, or accomplishments. You can compliment someone about any one of hundreds of things. Just keep it real and don’t go overboard. Insincerity can be sensed.