Whether you love to write or hate to write, my advice is the same.
First, read, read, read. Read anything you want. Comic books, magazines, funny books, sad books, adventures, fantasy - whatever you like. Reading is the best teacher of writing. I actually schedule reading time into my work schedule because I study many books in order to be able to write my own.
Then don't be afraid of the blank page or the blank screen. Just do it. Don't be afraid of sounding stupid. Just get it down. And if you want to, you can always go back in revise it. Write about things you like and write the way you like to write. Make lists, doodle, rant, rap. Write poems, Wacky stories. Diary entries. But just write. The more you do it, the more you'll love it. AND the better you'll become.