It's easy to get caught up in thought.
Daydreaming, planning, big ideas. These are all wonderful things, but when it comes right down to it, what actions are what truly matters. Actions shape us more than thoughts.
Often times it's not a single action that defines us. One act of kindness will not make a kind person. One mistake has to be terrible to stick. Repeated actions on the other hand define us.
If you want to be a blogger, blog. Repeatedly. Blog every day.
If you want to be a professional blogger, work towards achieving that goal, with real actions, over time, you'll get there.
One action is not going to make your dreams come true, it has to be part of a series of actions to really happen.