Stop doing what you are just OK at.
The only way to truly be of value is to be a master at at least one thing. The only way to do that is to stop spreading yourself thin with all of your other work. Pick one thing and be a master at that first. People will pay for someone that is a master at one thing over someone who is just ok at everything. By all means you can be multitalented but just know where your bread and butter is.