I used to pre-rehearse everything and then bring my pre-rehearsed performance to the set. Now, I'm learning to let it happen in the moment. American actors are much better at that than British actors. If I knew how to trust myself, I would have been much more relaxed. Maybe I would have less gray hairs today.
Latin food suffers like Chinese. You can do marginal Chinese and be successful. You can do crappy Mexican and be packed.