No no. Listen to what he is saying.
This song is about whatever makes you happy. He's going through a rough time in the verses but then realizes that he can do what he wants, and not just follow the avg joe 9 to 5 lifestyle. He also realizes that his friends are with him all the way.
As far as "whoever she is", . Its referring to whatever you love and are passionate about. Calling it "she", like people call cars, "shes". Wherever "she" may be.(your love can be anything). You do not have to worry and stress about it. Get it right people. Love life.