I hear you on the burnt out thing Many days anymore I choose to sit on my porch, drink high life, and throw the ball for the dog rather than go paddlin.
Been boatin for over 25 years now and I look back to the blue dancer at the salider put in after my roll class that my parents made me take when I was in the 7th grade (yep did not want to go at first

reason = you cant fish out of a kayak), anyway that feelin that kayakin gives you as you are learnin in the milk run, then as time goes on it takes browns, the numbers, piney, and lake just to get that same feelin. Lately I have been havin trouble gettin back to that dancer at salider. I still make it out and have a ton of enjoyable days but I have gotten away from paddlin every day.
Here is lately what I find keeps me comin back summer after summer. I try to incorporate a young, beginner, preferably fearless, somewhat athletic, and most importantly extremely motivated boater into my day to day paddlin routine. Watchin someone learn and havin them all fired up to get a personal first d on a run is enough to get me off the porch and on the river.
Last and dont take this the wrong way but sometimes you need to walk away. If the enjoyment is not there leave until motivated to come back. This motivation may never return as is the case with me I played college athletics and had the chance to play after college in Europe or CBA ball - by the time I was 23-24 I was soooo burnt. Burnt on weights, the gym, the plyo workouts, the pool, agility workouts, the camps, the coaches, the politics, or better put the entire scene. I walked away and havent picked up a ball since. The motivation still is just no there to do it or coach it so I dont and my life has been better since.
Well now off to do somethin I am motivated to do - spring sledneckin and BC skiing! WWWWAAAAHHHHHOOOOO!