Not sure about the grammar involved (shouldn’t that be “I was”?) but give yourself a present and spend some time reading through the LinkedIn page If I were 22. It’s full of personal stories from people that have been there and done it in their careers passing on the benefit of their hindsight. Lots of different careers represented. Lots of different perspectives. None of them are the answer or the truth but I’m sure you’ll find some nuggets that feel right for you.