I tend to fish harder lakes with very limited time so blanking is part of the furniture. Sure it can be frustrating, but it doesn't break me and I never question my tactics (unless I see something that tells my I'm using the wrong tactics which in itself I would consider to be a result.... critical info learned innit).
Ultimately, I'm not going to get the buzz I seek from easy, heavily stocked waters. If that means I have to go for longer periods without catching then so be it. I'd rather spend my one night a month doing everything in my power to find and catch something special than queuing up on a day ticket to catch a fish that comes out once a week.
Again - I don't get this. In years gone I've retreated to easier waters when it looks like a blank year is on the cards but the result is always the same - catch a few doubles or twenties that mean very little to me..... feel like I've wasted precious time that could've been spent chasing the proper ones...... go back to the hard lake and stay there until I've achieved what I wanted to achieve. Basically a pointless exercise.
Of course it's all personal choice but for me: the harder the task, the bigger the buzz when it's job done. That's in all walks of life imo - not just fishing.