I think it's fairly common to fall into jobs. One thing leads to another. This can be a good thing or a bad thing, depending on your circumstances and how much influence you have had over the situation.
I fell into my first small business by actively identifying bits of my job that I liked (minute taking - weird, I know) and other things that I like (teaching others) to develop a minute taking training course that I've now been running for over 5 years.
But this time it was more accidental. A couple of years ago I was fortunate to receive a redundancy from my job which included formal career coaching. This came at a time when I was more than ready to leave my job and was considering a change of sector, so the timing couldn't have been better!
During the career coaching sessions I learned a lot about how to write a killer resume, application letter and LinkedIn profile tailored to the particular job and sector. Ever since then I have been sharing my new-found knowledge with friends and colleagues (it was very easy to find a new job with my killer resume!).
I have since helped numerous colleagues and friends find new jobs. I even ran a LinkedIn workshop at my old workplace.
I discovered that I really like helping people figure out how to sell themselves in their job applications. And I love the writing and editing side too. So it's win-win for me. I've found a job that I love, and I can now help you find yours too.