I used to go surfing with a colleague of mine when I was a high school teacher. He was more experienced and I learnt a lot from him. One time I asked him how he finds motivation to get into the sea when it's a bit gnarly or cold. Derek said :

You gotta get psyched, getting psyched takes practices, but the more your get psyched, the easier it is to get psyched

I've been thinking about this a bit recently, and it feels connected to the skill of partying, or watching and nurturing your energy.