Personally speaking, the biggest road block or "stall" I've encountered thus far is human emotion. When I was weaker, I'd lose a lot of games and quickly get frustrated and discouraged. I didn't ask myself why I lost. I didn't ask myself why my opponent won. I didn't even look over my games, for the most part. And all of that factored in to me getting stuck a lot when I was a DDK.
Now, however, I've learned to accept losses. When I play games nowadays, it almost feels like I search for ways to lose. That might sound confusing, so I'll explain. Instead of playing moves that feel safe, I try new things. I try to kill more, ect. This doesn't always work, of course, but I can learn from failures like that.
I think another roadblock has been my, ahem,
instinctual style of play. Here recently I've been trying to adjust that.
Again, sometimes I get frustrated. It's easy to look at my 4-21 record this month and think "why do I play this game?" except now, I don't let that bother me as much. Instead I try to focus on how I can learn from those lossses. That's not to say human emotion isn't a factor in why I'm still an 8k (that and not playing many ranked games this month, haha), but I think losing bothers me a lot less than it used to.
And I think that's what demotivates a lot of beginning players. In Go, I've found you tend to lose more than you win. But perhaps that's my own experience.
