Renaissance man or Jack-of-all-trades?

I like to think of myself as a Renaissance man, but fear I fall more into the category of a Jack-of-all-trades. I am an artist who despite colorblindness has several hanging paintings in other than my livingroom. I have designed and built furniture, done block printing, silkscreen, and wood carving. I was, for twenty or so years, a hobby blacksmith. I have done home improvements in the form of tearing out walls and building new replacements, run electrical wiring and plumbed kitchens and baths. I have run a newsletter, written essays, and written a book and sop up all sorts of knowlege like astronomy and physics like a compressed sponge. I have displayed competence in all these things, but excelled in none. I fear my constant turning to the next project before the last one has been finished dooms me to the level of mediocrity, not memorability. What say ye?

A little encouragement goes a long way

Back when I started writing my book, Double Trouble on Corned Beef Row, I had the basic concept together and a few chapters finished. However, I was unsure of the caliber of my writing. I asked my cousin, Betty, to give me an opinion of what I had done to that point. The response I got back was more than what I had anticipated by a good margin. She said I should start looking for a publisher, and that it was very good. It was her response and encouragement that set me to working earnestly to complete it. I had gained a reputation in my family as one who starts a project but never finishes it. That included home renovations, hobbies, and other things. When my wife lost her job, I had to try to come up with a way of making money. Writing the book and turning it into a moneymaker was one possible avenue.
I sent Betty subsequent chapters for awhile and she made some suggestions that I took into consideration. When I finished writing it, I sent her the manuscript on a cdrom to hold for me for copyright validation which she, and husband Al, did for me. A gesture I greatly appreciated, to be sure. When the book was finally published, I signed one of the five original proofs and sent it to her. A few weeks later, I emailed her and asked what she thought of the finished product. Once again, her response was glowingly positive. She also told me she was proud of me. That in itself made the whole thing worthwhile. Thank you, Betty Lou, thank you!

If not NOW, when?

I may be getting in over my head, but I have been looking at the possibility of converting my manuscript to an electronic format and doing an ebook before an ink and paper one gets produced. Is this crazy? Has anyone else ever done something like this? I am in a situation where I am not getting any younger, and I want to see the work of two years out in the public eye.
Writing my book, "Double Trouble on Corned Beef Row," was something I thought of doing Decades ago. Not this particular book, I started a vampire novel thirty years ago, but never finished it. I have mentally kicked my own butt for years for not finishing what I started. There were art projects, too. Not to mention home remodeling and maintenance items than never got finished.
That has been one of my great failings. Not finishing things. Project after project has gone incomplete. I have been guilty of the same failure all of my life. Now, after toughing out the writing, editing, rewriting, reediting that went into the book, I want to see it through and into print. Or, at least in some form, in the hands of others so they can appreciate what I have done.
Am I being conceited in thinking what I wrote is worthy of appreciation? Isn't that what every author believes? What I am considering may constitute literary suicide, but big risks often have big payoffs. And, I don't have forever!