Anything cool I’ve ever done has been when I’m going to go do it with friends. I’ve tried a bunch of shit - I never willed myself to play piano, but lifting with my friends after school came second nature to me and it instilled a life long habit of exercise. You’re probably more clever with a larger canon than that 16 year old (from a distressing number of years ago) with more intention and more resources for where to go and how to do what you want.

Personally, I think that direction/end goal is important to keep in mind. Then, when you know what you want, you always think small. You’re not establishing a workout routine, you’re getting up from your office chair. You’re not about to go do your first leg day, you’re remembering where the keys are. I’d even put some fun stuff like your favorite music on the way there so by time it’s time to work, you’ve eased yourself into the idea that you’re switching to focus mode.