Same here, cultivating motivation is definitely the hardest part of the job. Academic work needs months if not years get out and have impact and, personally, I don't get to discuss my work too often with people because it's too specialized.
Yeah and also it's really hard to justify to yourself spending time on more general topics. Like I should go through a general textbook or two that I'm interested in, but instead I just procrastinate bc it doesn't feel worthwhile or active work. Same for keeping up with scientific news. Even within my own research group of 30 students probably only 3 students understand a given project in any depth.