Aha... Longest I've gone is a little over one day, but I wasn't planning too.. I tried this a couple months ago, I had failed in about 20 minutes.
Why?!?!!? Nahh.. just kidding...I tried this once...lasted a good 14 days...until one day I just forgot I was trying to last
I tried it. What happens is - you get over it but you feel a bit tense. Then you forget all about it and one day when you're bored you will think "I know, I'll have a wank now" and you do and it's great and you never give up again