“Just do it” is such easy advice to give but I feel your pain OP. There are things I want to accomplish that I CANNOT get myself up to do. I can’t execute plans or schedules for things that don’t immediately threaten my livelihood. It’s a real PITA. Executive dysfunction is a term I’ve read about recently that describes this.
I’m convinced the way we think about things is the driving force. For example, I’ve always struggled to work out regularly. What’s really been helping me the last month is the mantra “I’ll never regret working out but I absolutely will regret not working out”. So try to critically evaluate your thought processes behind the things you want to accomplish and see if there is another way of thinking about it that makes doing it easier.