It happens with almost everything, at least for me.
There's the first blush of: I WILL NEVER LOVE A SYSTEM FOR KEEPING MYSELF ORGANIZED LIKE I LOVE THIS SYSTEM. TOGETHER FOREVER.
And then, we hum along in a sense of comfortable companionship, the system remembering my tasks, me feeling grateful for the system and putting in the work to keep it functional.
And then, sometimes, my attention starts to wander. A new system seems quite attractive! My old system just doesn't have the same spark that it used to! It's not you, Bullet Journaling, it's me!!!!
But I've learned now, over the course of a few of these dating - committed relationship - breakup cycles that there is a BIG cost to switching systems. Not an insurmountable one, but one to consider before you switch.
So if you're feeling antsy with your current system, or are just doing a general "where is this relationship going" check in, here are some questions to answer to see if there is work to be done, if it can be salvaged, and what to look for in a new system!
Am I avoiding using my system, and instead using a makeshift one (or none at all?)
What things am I missing/not doing consistently/losing sight of?
What feels sticky about the current system?
Undone tasks?
Complicated set up
Changing circumstances?
Would you use it again if you could have a hard reset?
Can you hard reset it?
Is there another system that meets more of your needs than the current one is?
But in general, the best rule of thumb for project management systems is: does this require the minimum amount of effort to maintain? How can I make it easier to use and still get the benefits?
Some amount of project management is important - it helps you remember things, keep on track, prioritize important things and not just urgent ones, gives you a sense of progress. But when maintaining the system is as much of a chore as doing the work itself, then something is out of balance. Think about it as a relationship - is it worth it to stay together for the history? Is it worth it to keep the investment and move through this rough patch? Or do you need a fresh start?