Whenever I get frustrated with the speed of writing, I remind myself that the best writing is organic. The story itself grows at its own pace, taking on a life of it's own. You can't rush it. You can't rush writing it; you can't rush revising it. There are other things that you can't rush.
You can't rush relationships. Some may happen quickly. You may find a kindred spirit. But the trust? The comfortable familiarity? Well, you can't rush it. It has to be organic.
You also can't rush knowledge. You can't skip a rung on the learning ladder. You can't jump past where you.
And I think that if you are firmly with the moment, if you are letting things grow, organically, then the universe responds with what you need. To enable you to grow and keep moving forward.
I am where I need to be right now, as is my writing. Would I love it if the writing resembled what it is in my imagination? Yes. Will it get there? Yes. Organically.