Have a personal question for those familiar with the field. I am an "older than usual" undergrad student who is very interested in physics. At 27 years old I have fallen in love with understanding the world through physics and mathematics. I will be declaring myself a physics major this semester (Undergrad) and I plan to give it my all, make the necessary sacrifices, and eventually work towards a doctorate. I would appreciate some insight from the members of this site. What am i up against? is my situation really that rare? should i rethink my decision? any feedback is appreciated. Thank you!