Being an expert is easy.
Being a sought-after expert is what's difficult.
To become good at something, all you need is the general correct direction, a little self-awareness (or someone else's awareness), and plenty of time.
Relatively speaking, it's easy. Just a little tedious and tiring.
Now that you have that expertise, though, letting people know that you have it? That's the tough next step.
Because even with determination, resources, and time, it won't automatically happen.
For this, you need the right guidance.
By right, I mean guidance towards actions that will work for you in your particular situation and field of expertise.
Blindly copying someone else won't necessarily work for you.
It has to fit you. Like a glove.