Just started using those Bloks. They are spendy, but have to admit the packaging and ease of chewing on the run make them worth it for me.
A bit of a cliché, but I try to imagine the feeling of crossing the line achieving my target combined with the small amount of time left to run (relative to the months of training I've put in).
Bloks are great if your not huffing & puffing and trying to swallow then better with a drink I've found
Yes I do tend to think I can easily do a 6-7 mile run with fresh legs, mine didn't seem to be so sore today/yesterday so maybe all the running is finally paying off