For all those who say it's very hard to keep your mood high with a big energy tank, I'm not finding it to be that onerous or difficult at all. You do have to munch rookswort every 10 minutes, or TP home and go into cultivate/decorate mode if you just want to hang out and chat or go afk, but otherwise it isn't a very big deal. If you forget for a while, gulp some butterfly milk and boom you're right back up to 100% mood.
It seems like if you're having that much trouble keeping your mood up - you're doing it wrong. ;)