The great enemy of clear language is insincerity. When there is a gap between one’s real and one’s declared aims, one turns, as it were, instinctively to long words and exhausted idioms, like a cuttlefish squirting out ink.
You must want to enough. Enough to take all the rejections, enough to pay the price of disappointment and discouragement while you are learning. Like any other artist you must learn your craft - then you can add all the genius you like.