One of the best pieces of writing advice I was ever given was by the poet and writer John Pudney. As a schoolboy I enjoyed reading his books and having discovered his address, I wrote to him enclosing a story and saying that when I grew up I wanted to be a writer.
He wrote a charming letter back and said that if I wanted to be a writer, I had to 'write, write, write.'
To be a writer, or indeed to be a success in any endeavour, you do need to put in the time and be prepared to practice and perfect what you do. And for a writer, this involves actually sitting down and writing.
It is by writing your skills will get better.
It is by writing you will discover what works best for you (and which genre best suits your talents.)
And it is by writing you will actually achieve the writing breakthrough you want.
Write, write and write and, with perserverance, your writing dreams will stand more chance of being realised.