it can't predicted its maximum & minimum.
market is always changing but it also remain the same element in each trading.

As far as I know, when trading using breakout system, the condition remains the same calculation, the change is might at the level where breakout will happen. last week may occur in the pivot, but next week it may happen in Ressistance-Support level.

I think that nothing last forever.

The best strategy is keep evolving and paying attention to the changes.

Sometime them ( the changes ), are so sutil, that we can't realize about it, and when you are not expect, it's too late.

Doesn't matter if you think that your strategy is strong or not, but something real is: nothing changes until the moment when change, then it only repeats itself.

Many strategies are based on that: repetition.

But there are no warranties about continuity of repetitions.

I try to keep my eyes wide open to the sutil changes that happen. It could save me to commit an unrecoverable mistake, and I've made enough mistakes investing until now.

Best regards and have a happy trading !!!

There r two parts of strategy. One is basic and core part which changes after very long time. Your success is mainly based on this part. Second part is supportive. You can change it according to market conditions, risk, capital etc. 

So basic strategy never changes if it is successful.