Start Small

Is writing that 6 generation genealogy too much of a task? Think you'll never get that much completed in your lifetime? Consider starting small: write the biography of one ancestor. Document as much of her (or his) life as you can, citing your sources as you go. This smaller task is one that you are more likely to complete. When you've finished, consider submitting it to the local genealogical or historical society where the ancestor lived for inclusion in their files or possible publication in their newsletter.

Then at the very least, you've preserved some of your information.

And maybe you've got yourself started to the point where you are confident to continue writing.