My advice for aspiring writers is to write, then to submit your work to someone who is willing to tell you the truth about it, then accept the truth and take action accordingly.
Ideally, the person you want telling you the truth is someone at arms length who you will pay for their service, if you can afford it. Never a relative or friend (although they can be a Beta reader, if they're willing to tell you the truth, too). A professional editor is best.
As with any art, fulfillment comes with hard work over a long period of time. If you don't love it, do something else and write just to please yourself.