Hey, even the best of us are guilty of monopolizing a conversation. You might not feel like you are because you're not, like, monologuing, but you could accidentally be talk-blocking other people. When in a group, you kind of just have to make peace with the fact that you're not going to be able to say everything that you want to say without it becoming a conversational ping-pong match between you and everyone else trying to get a word in. When you're That Person, conversations usually wind up looking like this:
Person A: *says anything*
Person B: That reminds me...
Person C: *says anything*
Person B: I have a witty comment about that!
Person D: *says anything*
Person B: Shockingly, I have something to say about this as well!
That's not to say you're not saying helpful or interesting things — just, people will appreciate that you're giving them the opportunity to say helpful and interesting things too.