You really need to love acting in order to survive it. Everyone in TV and film works extremely hard. The hours on set can be really long. Actors face rejection on a daily basis. It's impossible to plan anything because your life is so unpredictable. If you're in it for wealth or fame or adoration, you are on the wrong path. But if these thoughts don't faze you and you're ready to make the commitment, my advice is to never give up and just keep swimming, because there will be a lot of fun at the end of the tunnel.