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If you want to improve your skills about something that you like to do, you must accept what would be the result of something that you don't really know if you did it properly.
Being the best among the rest is not winning a million dollar, it is about what you did was the right thing to do to be the best.
You have to risk yourself a little to get anywhere; especially with writing. If you don't put your writing out there no one will ever know. If you do put your writing out there people may hate it. Atleast you will grow.