Best way is to just do it like you were being pulled by a tractor beam. Like you have no choice in the matter. Because you don’t. Like the shoe people say, just do it. Roll out of bed, put on the shorts & shoes, sports bra, watch & everything else. Go to the door. Realize that you look stupid in all that stuff not running. Open the door. Give in to the Force. The inertia will pass. Next thing you know, you will be wondering why you hesitated. This is Sparta. This is discipline.