Some people spend a large part of their lives working in a job that their personality simply isn't a good fit for. Yet, emotions like fear or career inertia keep them in that same type of job. The first step out of that rut is to see that you aren't a good fit for the job you are doing.
There are so many things in life we can do, and sadly, life is finite. So we can't get it all done, but we can certainly do a bunch. The key is to turn "someday" into "now"!