Searching for "the right" monologue is like finding a needle in a haystack for many actors. Although you should thoroughly know and understand the play from which your monologue is taken, there's no rule that says you have to LIKE it. Remember, you're not putting on an entire production, you're reading a small portion from one character. Therefore, your only task is to find a CHARACTER you like. For beginning actors, the best thing to do is find a character that resembles your personality. That way, the emotions will come more naturally.