I usually start with an anecdote to reel the readers in. For example, since it's about psychology you can talk about the fear of public speaking and how you dealt with it or something. Start off with something descriptive like "Silence befalls in the room, a restless boy squirms in his seat, a man yawns, a curious woman gawks at me, and other eyes follow me as i Nervously walk to the stage." Then go on from there, describe your experience in another two sentences and talk about how that sparked your interest in psychology or something lol