Sounds like, going to bed with all the intention in the world about going for a ride but the next day, waking up having a different attitude... if so, something so simple may be so effective it'll become a new daily routine...

… conclude the usual shower activities with a cool-down-- there's a lot of research about how effective it is to health and wellbeing (written about here) and, it's easy because, it's not the cold so much as it is the change from hot to cold. So, it doesn't have to be an icy-cold shower to effect a positive new outlook on the day.

If interested, I'll fetch the link.