If that CTR is much higher than anyone else on the page, then the CPC is probably a lot lower than others on the page. What's the cost per lead/sale and what is the goal for the cost per lead/sale? If the cost is lower than the max you are willing to pay or it brings the benefits you want at an acceptable cost, then an 8.3% CTR is good, otherwise its just bragging rights.
999 out of 1000 Adwords advertisers are essentially day-trading, even the majority of those spending 5-7 figures/month. People are succeeding at managing each keyword they buy to some rule(s) that ensure ROI goals are met, but that approach puts volume in the waaaay back of the bus.
If you can make decisions on each keyword *in the context of the overall set of keywords*, there's another level of volume you can achieve within the same ROI goal.