'A good start was half of suceeding'

The old say: Hao de kai shi shi cheng gong le yi ban. It means when you have a good start, you're already halfway to suceeding. Take me as an example:

It was my Grade 2 Theory(Piano) Exam.
I was um... feeling kinda' strange...
Ask me the key signature of D minor? B flat!
Was it in harmonic or melodic? Harmonic!
Compose an answering rhythm? Um... The key signature is? 3/4? Should b easy?
I felt confident after the test.
Exactly two months after, my results were here...
Guess what I passed without a merit but a distinction...
(U c: In piano exams, v hv distinction, merit...)
I got something ending with an egg...
It's 100%!
Yupee!

See? A good start was half of suceeding... B confident of yourselves... Always...