Let me break this point down into two parts.
First, develop a very clear, detailed sense of what you want. What would you be doing? What would it look like? Feel like? In my experience, anything less than crystal clarity gets you nowhere fast.
It's perfectly fine to decide you don't want something after getting very clear about what it would entail. That saves you the time and energy you'd invest in pursuing it.
Second, you need to ask for what you want. Then ask again and again. Don't stop until you get it.
In other words, persistence is key. As is being demonstrative. Passivity won't work. That's why announcing a goal on your web site or on social media only goes so far (if anywhere at all).
You need to figure out who to ask for help, how, when, and where. Then ask. And then move onto the next person. And so on.
You cannot take no for an answer. Perhaps your timing is off. Or there's another avenue you haven't pursued.
Keep going. Be relentless.
When I've followed these simple principles, I've achieved goals. When I haven't, I've experienced frustration and even bitterness.
I work hard to get very clear about what I want. I then pursue it with the white-hot fire of desire. The combination continues to work well for me.