You learn from your mistakes and hope to become wiser from the
experience. This is how I see loosing a long post. I think this
has been a blessing in my past. In some cases I've learned I really
didn't have anything to say. In other cases it motivated me to
write a better post.
When a post starts to get long, I cut and paste it into Open
Office. This allows me to strip out meaningless words, tone it
down, and refine the argument. It also prevents me from loosing the
post by accidentally killing the web browser or going to another web
page by accident. If you are lucky when accidentally moving to a
new web page before submitting, the text you typed will be saved in
cache. Clicking the previous arrow will some times restore your
text. Neither Firefox or Internet Explorer guarantees this.
As for serious issues, I would say I handle them similar to the
cycles of mourning death of a loved one. Understanding this cycle
helps put a better perspective on coping with the dilemma.