When I was touring schools with Geoffrey Rush and we were answering questions in front of hundreds of kids, lots of them said, "I really what to be an actor".

Geoffrey Rush started working in the theatre at 20.  He won his first Oscar and international acclaim when he was 45.  He trained for 25 years before he was internationally recognised at the highest level.

If you want to be an actor, then be prepared to work for 25 years and not get an Oscar.  If you're happy with the thought of that, then be an actor, otherwise don't.

Similarly, if you want to be an entrepreneur, be prepared to work 24/7 and have no life for many, many years, living on minimum wage.  If you're happy with the thought of that, then be an entrepreneur, otherwise, don't.