I suppose practice is a kind of methodical karma.
If practice seems wonderful all the time and feels great, it might be that something is wrong with the practice.
On the other hand...
Practice can seem to unfold in an erratic way that might involve the following issues:
-a distracted practice or no practice at all engulfed by defiled distractions that might happen for days before a more focused practice arises for some time only to cycle back to a more distracted practice again. This might happen over and over changing as we learn and unlearn good habits and bad habits. Our habits are the engine of our karma.
-vaguely feeling like something is missing.
-feeling like it should be an easy thing to control the practice but somehow it isn't.
-experiencing a lot of tension and stress and usually not knowing exactly why.
-seeing that things just keep cycling around and around.
If practice contains any of the above then chances are you are practicing better than you might think.
(I should note that the above advice is for people who are practicing some kind of vipassana mindfulness outside an intensive retreat. It's not intended for a samatha or concentration practice)
I always wondered why we don't go into greater detail about how we practice in this forum. This greater detail would give a bit of an indication of your karma at least for others to give you their advice about it.
Maybe your karma doesn't have enough encouragement behind it.
I found myself needing advice on how to get myself practicing. I found many useful and free dana ebooks written by various teachers online. Also, I found books on how to stop procrastination very helpful(there are a lot out there just for free on the internet!)
Here is just one book I found useful and I hope you would too. It's easy to read and gets right to the point (IMHO) by Bhante Bodhidhamma entitled ENCOURAGEMENTS TOWARDS AWAKENING:
If so desired, I can give out more titles by obscure but wise teachers that might not be so well known by practitioners here. I like reading all these teachers because they each come at the practice and the Dharma from many different unique angles.
I hope you find good answers to what your looking for and you keep on practicing :) -Metta