This Life Starts as a Child Actor is a Manga/Manhwa/Manhua in english language, Drama series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

This life is doomed, you say? I’d rather think it’s good! After four years of a life that seemed destined for failure no matter what, Kang Soo-hyun thought he might finally shine as an actor. Just when he was about to embrace the light, a truck from the opposite direction collided with his car, bringing him to the brink of death and falling into despair… “Wait, I’m not dead, am I?” When he came to his senses, the reflection in the mirror was his cutest self at the age of 5. Yes, this life is starting from being a child actor! Thus, the acting career of actor Kang Soo-hyun begins.