(This is part of Fitness Cheereleader's blog challenge.)
When you hit a plateau, what do you do? I think it depends on the circumstances. And depending on the situation, the solution is different.
There are times it makes sense to take a break (I tried that...it failed. But there are times it would be necessary and helpful.)
There are times it makes sense to just keep going through the motions (injuries aren't included here).
There are times it makes sense to mix it up and try something different.
I think that last one is what I do more often. It can be as simple as adding speedwork or trying a new cross-training activity.
The important thing here is to not give up...ever.