Started coding at the age of 13, now a professional software engineer and Scrum Master, creating and maintaining enterprise solutions. Eat - Sleep - Code - Lift - Repeat 💪🏾
Oh I feel you, I get the same situation every now and then, even with smaller side projects and some of them are residing at the digital graveyard because of this. Andreas' answer has two good points to which I want to add mine:
ask yourself why you are doing this particular task / project. Ask yourself about the greater goal. If you can't find any reasons, maybe it's best to just leave it be.
take more than a day off if you can. Do something you don't normally do and break your habits for a couple of days. Completely destroy your daily routines. This helps me a lot! Sometimes I whish for those routines badly after just 1 or 2 days and get back to them and the task more happy. But there are also times where this is so relaxing that I can free my mind and can get back to it with a fresh mind.
find a new hobby / game / place to visit. Why? Because when I have something new I can't wait to play with / visit / do, I get more done in shorter time because I want to reach my goal but also want to get it done as fast as possible to be able to get to the fun stuff. So in short: find something that seems more fun to do, set milestones that need to be reached for a break and discipline yourself to reach a milestone every time before you get to do the fun stuff.
Oh I feel you, I get the same situation every now and then, even with smaller side projects and some of them are residing at the digital graveyard because of this. Andreas' answer has two good points to which I want to add mine:
Thank you Robin for your great additions!