In any hero's journey, the hero—be it you, me, Luke Skywalker, Moana, Dorothy, or Rocky—first receives a call. A call to be someone better or do something bigger. Although the journey will surely include more challenges along the way, the most difficult obstacle any hero or heroine will face is making the decision to answer the call.
Deciding that you have what it takes.
Because after that, nothing remains the same. You leave the world you have grown accustomed to and enter a new reality. One in which you have eliminated distractions.
But you can only embark on your hero's journey one you have stopped welcoming the bright shiny objects into your life. The things that distract you from doing work that matters.
Priorities: the hardest decision is the first one. Choosing the useful things over the things that demand more attention than necessary.