The difference between a dreamer and a realist is that the realist sets goals for the dream.
In order to triumph in this, one must set a process on how to reach the goal.
If you want to be a renowned author, write every day, keep the flow going by practicing when you can; find somebody who can give you concise criticism that’ll help you grow as a writer; find an agent you can trust; participate in challenges; review your old work and see if you can do better. In fact this advice can go for anything, just replace writer with whatever it is you want to be.
Set goals and triumph. Do that thing you’ve always wanted to do. Enjoy life, because we only have one and it would be a waste if we left it unfinished.