there is a fear whether I will qualify for JEE mains 2020 or not. how to overcome that fear and what to do next to score good ranking?

Dear Aspirant

You should solve previous year question paper of Jee main because it will help you to score good marks .Just keep believing on yourself if you are doing hard work then Definitely you will get success
You should revise all the formulas and concepts in short so you can attempt question properly.
Just read ncert thoroughly to score good in upcoming Jee mains .
If you want to overcome through this fear then you have to be confident on your struggles and hard work .
You should also give practice test to manage time and accuracy.

Thanks
All the very best