Honestly, a few things - firstly, good job on not letting a score you don't like get you down. Good job on wanting to improve, and being able to identify where you went wrong throughout the year. It takes a big person to say, "I fucked up", and even bigger person to try and fix that. But one of your paragraphs, although I'm sure you didn't mean it this way, could be taken so badly by others:
I had a horrible day. After crying a taking a long shower I realised that failing this subject really has been a blessing. Though failing I learned some really valuable lessons about who I am and what I want in life. I received a 32 in Biology and within two hours I was at the doorstep of my pathways co-ordinator ready to repeat the subject.
A 32 is in no way a fail. If you got a 32, this literally means you had a higher score than over 50% of the people who did biology this year (more specifically, better than 61% of all year 12 bio students this year). There is NOTHING wrong with this score, and while I'm sure you were aiming for higher, I wanted to put this proviso here for anybody who was happy with their 30:
BEING AVERAGE DOES NOT MEAN YOU ARE A FAILURE. Hell, getting an average score (and really, 30 is THE average score - it puts you right in the middle) should be commended - you beat 50% of the students in the unit. That could be anywhere in the thousands, particularly with subjects like bio which sees a high intake.
Honestly, good job in seeing how you can use this experience to get better scores - but just remember that you could really upset people by saying things like "I failed" when you have a (quite literally) above average score.