(Here's another recent hand-drawn one, done first as a reminder to myself to get to work.)
One of the best feelings in life is the feeling of triumph after completing some significant task. It doesn't have to be large, just significant; cleaning out the garage is great in it's own right.
However, there's this common trap of celebrating too early. Oftentimes, we announce that we're going to get something done, and somehow the brain takes that as a signal of triumph and makes us feel great about our resolve to be exceptional. We run headlong into the task feeling great, but then suddenly realise, "This is harder than I thought!" After some hapless fiddling, the brain is convinced, "I've already been rewarded, I'm not doing any more work!"
In other words, feeling good about yourself/comfortable about the situation before the work gets done is a sure way of ensuring that the work is not going to get done.
Hence, I always try to make sure that I've got some form of inadequacy that needs to be fulfilled by working on some significant task. Only if I do that, do I feel compelled to start.
Fortunately, once I start, it's all downhill from there. The momentum carries me through, and that's when I give myself permission to feel good about myself.