ADULTING 101: Fake it 'til you make it

Yeah, faking anything isn't ideal, but if you don't feel confident, sometimes you have to pretend that you are until you gain the experience or skills necessary for the situation. It might feel unnatural in the beginning, but it'll get easier soon as it becomes more real.

Remember, we all do this to a certain extent. None of us ever feels competent 100% of the time. So try not worry about it too much in the meantime and just jedi mind trick yourself (and others) until you're the real deal.