You cannot tell the future. However, your thoughts and actions now can influence how you behave in the future.

If we do not know the future, why not make up and think about good "premonitions"? It is in your head, not anyone else's, start thinking about becoming an actor/comedian if that is what you want to do; what do you have to do next to get on that road you want?

If I cannot get one of my anxious thoughts to leave me alone, I accept it (that I am having the thought and trouble with it, not that it is "true") and think about what I might be able to do about it? In this case, I don't see much you can do about it if you are "doomed" to be disfigured? So, you are not disfigured now/yet, why waste now? It is a worry similar to worrying about getting old?

One of my favorite book quotes is, "The happy ending cannot come in the middle of the story" and I use that to help myself too; if I am not happy, if the end is not here yet, the story is not finished? It keeps me in the present and working toward my goal.