For me its just little things really.
So when i was trad working, i started to time myself per house and push myself to be quicker n quicker. Or to change a technique like on the vid i posted the other day until ive mastered it. I enjoyed that as it takes the boredom away, but also when people saw how i worked they would employ me because they knew i was experienced and good (wish i had a quid for everytime i got told that).
There wasnt much more i could do under trad working to bring new life into it. Then 2 yrs back went wfp and that brought new life to the job. So now that ive mastered all the basics, im looking at small ways in which i can shake time off, new ways to improve. The friend who first went onto wfp and who got me into it, is alot like some on here with his approach.....if it does the job dont change it.....or if its not broken dont fix it!! But im not of that attitude, a small change here can make a big difference here. So for instance my 14 inch brick that some refer to, fits the width of alot of my windows so 1 pass for clean and 1 pass for rinse (esp 6 jets).....where as a smaller brush would be side to side or whatever and a whole lot more energy.
So sorry for waffle, but for me looking for ways to improve keeps this job alive for me