Well, I think it is a minor miracle that we have as much success as we do seeing as we are often/always high while gardening! So cut yourself a break!
I really like the switches, but the danger with them is potentially leaving them off. I flip them off just before the timer goes off to water quickly in the morning. By the time I am done the timer is off and the switch is off. If I am not going to be there to water again when the lights come back on, I have to remember to flip the switch back on! It isn't usually a concern, because I am always there to water when the lights come on - but you can see where the problem would lie