Have I wasted a year of my life?

Ok, so last year I began my first year at Melbourne University and to be honest, had a dreadful year. I had a car accident, didn't enjoy some of my subjects, which lead to stress and being antisocial and unhappy. I studied, psychology, biology and Chemistry. I hated chemistry but enjoyed parts of biology and psychology. When it came to the start of this year, I thought I wanted to pursue my life long veterinarian dream, however, realised that studying Chemistry would only make matters worse. So basically I had no idea of what I wanted to do, and did have a mental breakdown. I decided to defer for a semester. So here I am now, and I have decided to change uni (RMIT) to study psychology next semester, as Melbourne Uni didn't work for me and it felt like I was getting no where.

Even though I have made a decision, I feel like my first year of Uni was a waste of a year and money. I keep thinking that I should continue on with the Melb Uni science degree and just do psychology and save a year of studying, however, studying at Melbourne Uni didn't really work for me.

So do you think last year was a waste of time? Or should I make it "worthwhile" and continue on with my Melbourne Uni science bachelor's degree?