You are an actor. You have dedicated your life and yourself so that stories may be told through you as a vessel. Remind yourself that this craft is a selfless one, not a selfish one. When you are criticized, ridiculed, and laughed at by your choice to pursue this, just give them a knowing smile and walk off. Because you know they're wrong. We are actors because of the love we have of the craft, and through this love of it, we understand the selflessness of it all. Giving yourself up for a story. It doesn't matter if you have tons of lines, 1 line, or a reaction shot, who you are is in service of a story. And someday when you have enough success in the industry, you'll get to have a choice which stories you want to tell, hell, even write them yourself. But until then, you sacrifice a lot, in service of the stories you can be a part of. So when you walk out of that audition room, don't walk away thinking of things you didn't end up doing, or how what you had planned to do didn't happen in there. Look back and BE KIND. Choose one thing you did that you loved. Choose another thing if there's more, and there usually is. Someone advised me to do this recently, and I practised it after an audition, and man did I feel free. As actors we get caught up on things we don't have, things we haven't achieved yet, and the hurdles we have to get through. So remember to stay positive, and stay kind to yourself. This will radiate onto other aspects of your life: in how you treat others, and how you are perceived in the audition room. People are drawn to kindness. Not selfish, needy doucheface Shia Lebeouf types.