Only by doing Hard Work, you can't be confident enough for a success.
To crack NEET 2018, you will need hard work and smart work to prepare efficiently. You can get the best of your preparations only when you decide to go for the smart work.
To crack NEET, you have to crack the NEET Biology. And to crack NEET Biology, you will need the list of important chapters to cover first along with their weightage in the exam.

Human Physiology: 12%
Biomolecules:10%
Biological Classification: 9%
Molecular basis of Inheritance:8.2%
Animal Kingdom: 7%
Reproduction: 6.6%
Ecosystem: 5.1%
Human Health and Diseases: 4.3%

So, cover up these topics to get the maximum marks in NEET biology.
All the Best..!!