Julian Reisinger's answers are awesome, but if you can't swing all that, simply learn to listen. Not listen for a space to jump in with your opinion, but listen in order to hear and understand what the person is saying, and what they're not saying. The most popular and memorable people in the world are those who give us their undivided and full attention because they really are interested in what we have to say. Learn to listen well and you'll always be memorable. People will say you are the most fascinating person in the room, even if you never say more than 20 words. We remember (memorable) how others make us FEEL and nothing makes us feel warmer, better, loved or important than having the authentic and focused attention of someone else. Try it.