Why oh why didn't I take Math/Physics seriously... But the ones that I regret the most are those were I didn't say how I truly felt to the people that matter t

Why oh why didn't I take Math/Physics seriously... But the ones that I regret the most are those were I didn't say how I truly felt to the people that matter that most. They are the ones, not the rejections or the failures, that gnaws on your soul.