last year I did a short 1400km tour from saskatchewan to BC and this year I thought it'd be nice to do the whole country - BC to Newfoundland.
Well, after about 18 days I ditched my bike and gear along the road outside moose jaw, SK and called it quits.
It's funny sometimes how you just realize you don't much want to do a specific thing anymore, like riding a bike 7 hours a day for 90+ days.
I thought I'd just drop in here and let people know that it's fine to quit something, but make sure you really want to qit and that you're not just having a bad day.

take care and have fun