A short visit to my profile tells me that I have found this site almost a year ago.
Took me some time, but hi I've lurked for a while, and it's time to introduce myself...

I've started RtK last year, but had to stop adding cards (due to not owning the book) and eventually stopped reviewing. More than half a year later (ugh), I've got the book.
I've started from scratch two months ago, and I'm really happy with the fact that it was really easy to remember the stories after going quickly through chapter 1. Plus, some problems that I had with some of the stories just vanished somehow.

Anyway, seeing lesson 18 coming up ahead, which is the first really LONG lesson, I just have to rant about how I like to learn a lesson as a unit, add it here, review until my 1st box is empty, then go on to the next lesson...

Any words of encouragement will be warmly received.

edit: there is no lesson 80

There's one with 130 a little after that.
...
Wait, did you say encouragement?

Yeah, about that... :O
guess I'll see how 18 feels before I try to even think about that one...

I am about 900 in - I fell off the bus once - for about 5 months... but steadily moving forward here now. I found a nice rhythm that works for me now. Not the fastest, but manageable.

Don't be afraid of big lessons - they are fairly easy because they include a large number of characters using the same primitives. Just rip through the lesson in one or two days, and then take a day or two to focus on the review avalanche that is sure to follow.

I am of the very slow progress camp with many stops and starts during my efforts with RTK, although recently I've been quite steady. Anyway, I never worry about how many kanji in a lesson, I just go kanji by kanji, card by card (I make cards) and look at my progress that way. I would say not to worry about how many kanji in a lesson and just do what you can as you can.

I stop trying to fit in entire lessons all at once.

Now I just add about 20-30 Kanji at a time. I have little trouble at this pace, and still feel like I'm getting somewhere.