“I can’t tell you how many times I don’t feel like training and tell myself, “I’ll just do one set and see how I feel.” 
You would think it would stop working at some point, but I almost always end up doing the whole workout.
Just start. Do a little and see what happens.”

James Clear

Same. When I’m kayaking or biking, the hardest thing is getting rigged up and out. Once I start, I don’t want to stop.