I sometimes tell myself that I don’t have to go very far, or maybe I just have to walk, but put on my shoes (and headphones and whatever else) and walk out the door. Once I’m out, I usually do want to go. Sometimes I can convince myself that future me will appreciate it if I go, which can be motivation, but that depends on the day. I also find that signing up for a race helps. If I don’t train leading up to it, that day is going to suck much more, and I don’t want that to happen!
I also have dogs and once they get a hint that I might go for one they are very persistent about making sure I take them. 😆