On quiet days, I can feel quite restless.  There are so many things on my agenda to be doing.  But life sometimes pulls me back with it's strong leash. 

When I'm not well, I can't really do much.  But, there's always something.  So, I can write, think, and do quiet and thoughtful things, and use my mental muscle instead. 

I think life guides you like that.  If you push too hard doing physical things all the time,  the pendulum really wants to swing the other way for a while and, if you don't let it, something breaks and has to be fixed.  

Then all you can do is let things dangle till it is fixed. 

Probably the same thing happens in reverse, when you really should be more active. 
The pendulum builds up so much pressure against your resistance to action that, when it does break free of your self-imposed limitations, it springs into action with such force
that  something gets hurt along the way. 

I suppose the main thing is to listen to your inner voice more, and let the urge to be active or passive come to the fore in much gentler ways, giving them free expression when they nudge you.  That way, life becomes a dance, in harmony, and might even be fun.  

I'd like to think so.