Don't worry. We've all been there. One day we get everything right-the protein/moisture balance, the right regimen, the products, the weather, the humidity, the alignment of the stars-it all works and our hair looks great! Then, we try our best to do everything the same, but something must be off, because we can't repeat the performance no matter how we try.
Or we have a day when we just want to do something different and find we have damaged our hair, or gotten a cut we don't like, or some other mini-disaster.
We just pick ourselves up, dust ourselves off, and try again. We make adjustments for weather, dew points, use different combinations of product/regimen, and keep hopin'. With luck and inspirations we get here, we eventually come up with a few things we know work in certain circumstances, and hopefully, one day we know what to do for differing conditions more often than not, and succeed more than we fail.
Experimenting with too many products to name here. All this great info keeps my head spinning.