- Forgetting your lines after the director says "Action"
- Not being in a "character" in a particular shot or in the entire scene
- The camera catches your gaze, wandering while your Co actor is talking to you
- Lack of necessary expressions while delivering your dialog
- Lack of required energy level in your performance
- Wrong movements (not hitting the mark while walking)
- Not using the props properly
- Getting stuck with speech, a word or speed
- Lack of preparation (The reason could also be getting script/lines on the set)
- Getting distracted with the activities on a set, which is always chaotic before a loud "quite" or "silence"
- Gossiping with Co actors or crew before or after your shot when you may be having more shots remaining
- Using your cell phone often
- Wandering mind leading to lack of concentration and focus
- Poor performance
- Multiple retakes of a shot annoying director, producer, DP and crew members
- Earning a bad name of a "poor actor"
- Bad publicity and losing opportunities
- Shattered dreams of becoming a "Star"
- Practice meditation
- You have to give yourself strong auto suggestions, repeatedly
- Practice concentration regularly by focusing your attention on a single object for as long as you can (lamp, table, pan etc.)
When distractions occur:
- Take a deep breath, hold for 5 seconds and release it very slowly. Repeat this at least 5 times
- Order your mind by saying "stop" or "stop wondering", Shake your head vigorously for a second and say again "back into", when you notice your mind wandering
- Pinch your arm or thigh hard
- Immediately shift your posture to an awkward one
- Say to yourself repeatedly "I'm so and so" (Character)
- Say to yourself positive things like "I can do it", "I will do it" or "I'm good, yes I'm good" to bring back your concentration
- While on set avoid as far as possible what I have mentioned under "Causes". After all, your career is more important than gossiping, phoning or flirt around.
- Speak only what is relevant and required as a courtesy, on the set.
(However, this does not mean you do not clarify your doubts with a director or cameraman. For your flawless performance, you must ASK)
If you practice the above regularly, you will tune your mental instrument so well that over a period of time, you will learn to be in a character instantly, irrespective of distractions