My putting has improved astronomically over the last few weeks and I'll tell you why.
I get behind my ball, crouch down to get a read. All I do is look, I don't think to myself " well, it goes left, blah blah blah", just look and take it all in .
I start walking back to my ball and take my grip. I stand over the ball and look to the hole and think " ok, that far, uphill/downhill a little etc"
Look down, check my putter face alignment and swing. All of this is done fairly quickly. I have made a conscious effort to stop thinking about putting. I let my brain get a look at the break in the green, take note of how far away it is..... then putt. You'd be amazed how smart your brain is at making putts if you just give it the information and let it happen.