How did these actors become movie stars?

Search them up on Wikipedia. Most of them do go to college for English or Drama they go to a very great drama school or a very good University for drama or theater and they get an agent or one comes to find them. All of them work for it, they just don't sit around and wait for it to come to them unless they have parents or know someone in the acting industry. Its really really hard to be as successful as them you have to really work for it and never give up.